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MORS 200 - Sciences > Chemistry Glossary > Flashcards

Flashcards in Chemistry Glossary Deck (278):
1

A group of chemicals used in addition to vascular and cavity embalming fluids; most are applied to the body surface

Accessory Chemicals

2

A substance that yields hydrogen or hydronium ions in a/an water (aqueous) solution

Acid (Arrhenius)

3

A substance that donates a proton

Acid (Bronsted-Lowry)

4

A substance that accepts a pair of electrons

Acid (Lewis)

5

A wax-like material produced by saponification of body fat in a body buried in alkaline soil

Adipocere AKA Grave Wax

6

Ag

Silver

7

Al

Aluminum

8

-AL

Suffix for an aldehyde

9

The predecessor of chemistry, had its roots in ancient Egypt. The Greeks named Egypt Kemi, because of the rich black soil

Alchemy

10

An organic compound containing one or more hydroxyl (-OH) groups. General formula for monohydroxyl alcohol is R-OH, where R is a hydrocarbon group

Alcohol

11

An organic compound containing one or more -CHO groups. The general formula is RCHO where R is a hydrocarbon group of hydrogen

Aldehyde

12

A sugar in which the functional groups are hydroxyl groups (-OH) and an aldehyde group (-CHO)

Aldose

13

Pertaining to any member of one of the two major groups of organic compounds, those having straight or branch chain structures

Aliphatic

14

A saturated hydrocarbon; a hydrocarbon that has no carbon carbon multiple bonds; formerly called the paraffin series

Alkane

15

A hydrocarbon containing a double bond

Alkene

16

A hydrocarbon containing a triple bond

Alkyne

17

A monovalent radical of the general formula CnH2n+1 formed when an alkane loses one hydrogen atom

Alkyl Group

18

An aliphatic hydrocarbon with one or more halogen atoms attached

Alkyl Halide

19

The existence of an element in two or more distinct forms

Allotropism

20

Any compound containing nitrogen; any group of compounds formed from ammonia by replacement of one or more hydrogen atoms by organic radicals. The general formula for primary _____ is R-NH2

Amine

21

The building blocks or proteins; a compound containing an amino group (-NH2), a carboxyl (-COOH) group, and a radical

Amino Acid

22

A compound that can act as both an acid and a base

Amphoteric

23

A negatively charged atom or group of atoms

Anion

24

Used to keep the blood in the liquid state; chemicals that retard the tendency of blood to become more viscous by natural postmortem processes and/or prevent any other adverse reactions from occurring between the blood and the other embalming chemicals

Anticoagulants

25

A solution in which water is the solvent

Aqueous Solution

26

Any compound containing a resonance stabilized ring such as benzene or toluene

Aromatic

27

The concentrated, preservative embalming chemical that will be diluted with water to form the arterial solution for injection into the arterial system during vascular embalming

Arterial Fluid

28

As

Arsenic

29

The smallest particle of an element that has all the properties of the element

Atom

30

Au

Gold

31

Self digestion or self-destruction of the body by autolytic enzymes

Autolysis

32

Those chemicals specifically designed for use in the preparation of bodies that have been autopsied

Autopsy Chemicals

33

A substance that yields hydroxide ions in aqueous solution

Base (Arrhenius)

34

A substance that accepts a proton

Base (Bronsted-Lowry)

35

A substance that donates a pair of electrons

Base (Lewis)

36

A mixture of alkylbenzyldimethylammonium chlorides. It and several very similar mixtures are used in the embalming laboratory in solutions for sterilization of instruments

Benzalkonium Chloride

37

That branch of chemistry dealing with compounds produced by living organisms

Biochemistry

38

The rapid passage of liquid particles to the vapor state by forming bubbles

Boiling

39

A very mild antiseptic added to embalming fluid. It helps regulate the acid-base balance

Boric Acid

40

Br

Bromine

41

Substances that in solution are capable of neutralizing, within limits, both acids and bases and thereby maintaining the original, or a constant pH, of the solution

Buffers

42

Ca

Calcium

43

The amount of heat required to raise the temperature of one gram of water to one degree C at 15 degrees C

Calorie (c)

44

A compound of hydrogen, carbon, and oxygen that is an aldehyde or ketone derivative of a polyhydroxyl alcohol (Ex. sugars, starches, glycogen)

Carbohydrate

45

A chemical group composed of one carbon atom double bonded to oxygen

Carbonyl Group

46

An organic compound containing the carboxyl group (-COOH)

Carboxylic Acid (Organic Acid)

47

A positively charged atom or group of atoms

Cation

48

A substance that changes the rate of a chemical reaction but undergoes no net change itself during the reaction

Catalyst

49

Concentrated embalming chemicals that are injected into the cavities of the body following aspiration in cavity embalming. These fluids can also be used for surface and hypodermic embalming fo the problem areas

Cavity Fluids

50

Cd

Cadmium

51

The temperature scale defined so that the freezing point of water is 0 degrees and its boiling point is 100 degrees at 1 atmosphere of pressure

Celsius Temperature

52

One hundredth of a meter

Cenitmeter

53

prefix for 1/100th

Centi

54

A greek word that means an infusion which literally means poured into

Chemia

55

One in which a new substance or substances are produced that have entirely different properties from the original substance because the chemical composition has changed

Chemical Change

56

A characteristic that can be observed when a substance is interacting with other substances resulting in change in chemical composition

Chemical Properties

57

The branch of natural science that is concerned with the description and classification of matter, with the changes that matter undergoes, and with the energy associated with each of these changes

Chemistry

58

Cl

Chlorine

59

The process of converting soluble protein to insoluble protein by heating or by contact with a chemical such as an alcohol or an aldehyde

Coagulation

60

A solution like system in which the size of solute particles is between 1 and 100 nanometers. Particles of solute pass through filters but not membranes

Colloid

61

The rapid oxidation or burning that produces heat and light

Combustion

62

A substance consisting of two or more atoms combined chemically in definite proportions by mass

Compound

63

A lipid whose hydrolytic products are fatty acids, an alcohol, and other substances

Compound Lipid

64

A solution containing a relatively large amount of solute

Concentrated Solution

65

The ratio of the mass or volume of a solute to the mass or volume of the solution or solvent

Concentration

66

A change of state of matter from a gas to a liquid

Condensation

67

A chemical bond in which a paid of electrons is shared between two atoms

Covalent Bond

68

Cu

Copper

69

Same as a millilieter

Cubic Centimeter

70

The process by which a substance is given a definite form

Crystallization

71

The removal of an amino (-NH2) group from a compound

Deamination

72

The removal of a carboxyl (-COOH) group from a compound

Decarboxylation

73

The gradual decomposition of dead or organic matter by the enzymes of aerobic bacteria

Decay

74

The prefix for 1/10th

Deci

75

The same as one tenth of a meter

Decimeter

76

The prefix for ten

Deka

77

The removal of water from a substance

Dehydration (Desiccation)

78

The disruption and breakdown of the secondary structure of a protein by heat or chemicals

Denaturation

79

The ratio of the mass of a substance to its volume

Density

80

Chemicals having the capability of displacing an unpleasant odor or of altering an unpleasant odor so that it is converted to a more pleasant one

Deodorants (Historically Reodorants)

81

An organic compound containing two aldehyde (-CHO) radicals

Dialdehyde

82

An ion composed of two atoms

Diatomic Ion

83

The movement of molecules or other particles in solution from an area of greater concentration to an area of lesser concentration until uniform concentration is reached

Diffusion

84

An alcohol containing two hydroxyl groups

Dihydroxyl Alcohol

85

A solution containing relatively small amount of solute

Dilute Solution

86

A carbohydrate formed by the linking of two monosaccharide units

Disaccharide

87

Natural or synthetic matter that is used to impart color to another material

Dye

88

A subatomic particle with a negative electrical charge and a mass that is 1/1,857 that of a proton. Found outside the nucleus of an atom

Electron

89

A simple substance which cannot be decomposed by ordinary chemical means

Element

90

The study of chemical post-mortem changes, the composition of embalming fluids and the interactions between each

Embalming Chemistry

91

The fluids specifically designed for preservation and disinfection purposes

Embalming Fluids

92

The act of mixing two insoluble liquids

Emulsifications

93

A mixture of two insoluble liquids, one being dispersed throughout the other in small droplets

Emulsion

94

A chemical reaction that absorbs or requires heat from its surroundings

Endothermic Reaction

95

The ability of a system or material to do work

Energy

96

A red dye derived from the action of bromine on fluorescein. Very commonly used in arterial fluids

Eosin

97

A combination of chemical symbols and formulas used as a shorthand way to represent the reactants and products in a chemical change

Chemical Equation

98

A compound with the general formula RCOOR1 where R is a hydrocarbon group or a hydrogen, and R1 is a hydrocarbon group. It is formed from an alcohol and organic (carboxylic) acid by removal of water (dehydration)

Ester

99

A solvent and a disinfectant in embalming fluid. Noted for its ability to dehydrate tissue

Ethanol

100

Any organic compound with the general formula ROR1 where R and R1 are hydrocarbon groups, formed by dehydration between two alcohols

Ether

101

A chemical reaction that releases or gives off heat

Exothermic Reaction

102

F

Fluorine

103

A common name for a triaclyglycerol that is a semisolid or solid at room temperature and contains a high percentage of saturated fatty acids

Fat

104

Fe

Iron

105

The microbial (enzymatic) decomposition of carbohydrates under anaerobic conditions

Fermentation

106

A preservative found in embalming fluid. Also a disinfectant. Reacts with proteins, causing them to become firm and more resistant to bacteria. Inhibits autolytic emzymes. A gas at room temperature

Formaldehyde

107

Formaldehyde gas dissolved in water

Formalin

108

A combination of symbols used to express the chemical composition of a substance

Formula

109

A change of state of matter from a liquid to a solid

Freezing

110

A specific atom or group of atoms that is attached to a carbon atom in an organic compound and that imparts an identifiable chemical behavior to the compound

Functional Group

111

A state of matter in which the atoms or molecules move about in almost complete freedom from one another. Have no definite shape or volume and assume the shape and volume of their container

Gas

112

A formula that denotes a class of compounds and includes the functional group and a symbol (R) denoting a Radical

General Formulas

113

A simple sugar with a molecular formula of C6H12O6

Glucose

114

A preservative found in embalming fluid
Contains two aldehyde groups on every molecule
Dialdehyde
Combines with proteins in such a way as to make them very resistant to attack by bacteria
Inhibits the enzymes which causes autolysis
Used in several arterial and cavity fluids
A liquid at room temperature

Glutaraldehyde

115

A modifying agent
Thick liquid often added to embalming fluids
Its purpose is to increase the solubility of various compounds, to delay the firming action of HCHO, and to serve as a humectant

Glycerol (Glycerin)

116

An animal starch made by forming chains of alpha glucose molecules

Glycogen

117

The condition of water which results from dissolved minerals and metallic ions such as calcium and magnesium

Hardness of Water

118

H

Hydrogen

119

He

Helium

120

Prefix for 100

Hecto

121

An iron-containing protein molecule occurring in red blood cells of vertebrates

Hemoglobin

122

Consisting of or composed of dissimilar elements of components; not having a uniform quality throughout

Heterogeneous

123

A six carbon sugar molecule

Hexose

124

Hg

Mercury

125

A sample of matter with uniform composition

Homogenous

126

Chemicals that increase the capability of embalmed tissues to retain moisture

Humectants

127

A compound in which there is a chemical union between water and certain substances when they crystallize

Hydrate

128

An organic compound that contains only carbon and hydrogen

Hydrocarbon

129

A chemical reaction in which a substance is broken down or dissociated by water; a reaction between a salt and water to yield an acid and a base of unequal strengths

Hydrolysis

130

A univalent radical and the functional group of the basic compounds in inorganic chemistry and the alcohols in organic chemistry

Hydroxyl (The Hydroxyl Group) -OH

131

A solution having a greater concentration of dissolved solute than the solution to which it is compared

Hypertonic Solution

132

A solution having a lesser concentration of dissolved solute than the solution to which it is compared

Hypotonic Solution

133

I

Iodine

134

The swelling and softening of tissues and organs as a result of absorbing moisture from adjacent sources

Imbibition

135

The strength of embalming fluids indicated by the number of grams of pure formaldehyde gas dissolved in 100mL of solution.
Usually refers to a percentage

Index

136

The tendency of a body to resist change in motion

Inertia

137

That branch of chemistry that studies the properties and reactions of elements excluding organic or certain carbon-containing compounds

Inorganic Chemistry

138

An atomic or molecular species with a positive or negative electrical charge

Ion

139

The dissociation of a substance in solution into ions

Ionization

140

The possession by two or more distinct compounds of the same molecular formula, each molecule having the same number of atoms of each element, but in a different arrangement

Isomerism

141

A solution having an equal concentration of dissolved solute as the solution to which it is compared

Isotonic Solution

142

K

Potassium

143

The base SI unit of temperature equal to 1/273.15 the absolute temperature of the triple point of water

Kelvin

144

Any of a class of organic compounds containing the carbonyl group (c=O) whose carbon atom is joined to two other carbon atoms; the carbonyl group occurs withint the carbon chain

Ketone

145

A sugar whose functional groups are hydroxyl (-OH) groups and a ketone (c=O) group

Ketose

146

Prefix for 1,000

Kilo

147

1000 grams. Basic unit of mass in the metric system

Kilogram

148

Energy of body by virtue of its motion

Kinetic Energy

149

In any chemical or physical change, energy is neither created nor destroyed but merely transformed from one form to another

Law of Conservation of Energy

150

In any chemical or physical change, mass is neither created nor destroyed, but merely changed in form

Law of Conservation of Mass

151

The amount of a poison (or radiation) that will kill 50% of the group to which it has been administered

Lethal Dose 50%

152

Formula used to conserve space over a structural formula

Line Formula

153

Conversion of a solid or gas into a liquid form as a result of a physical or chemical change

Liquefication

154

A substance that flows readily but does not tend to expand indefinitely

Liquid

155

Standard unit of volume in the metric system

Liter

156

An inorganic salt added to embalming fluid to help preserve the acid-base balance, to keep blood from clotting, and in some instances, for hypertonic effect

Magnesium Sulfate (Epsom Salts)

157

The quantity of matter present in an object

Mass

158

Anything that occupies space and has mass

Matter

159

The prefix for one million

Mega

160

The change of state from a solid to a liquid

Melting

161

An element marked by luster, malleability, ductility, and conductivity of electricity and heat. Metallic elements tend to form positive ions

Metal

162

A chemical reaction in which an element or radical in one compound exchanges places with another element or radical in another compound

Metathesis Reaction

163

The standard metric unit for length

Meter

164

All embalming fluids will contain some of this since it is so cloasely associated with the manufacture of formalin. Some contain extra because it stabilizes formalin and is both a solvent and a germicide

Methanol
Methyl Alcohol
Wood Alcohol

165

Mg

Magnesium

166

Prefix for 1/1,000,000th

Micro

167

The same as one millionth of a meter

Micrometer

168

The prefix for 1/1000th

Milli

169

The same as one thousandth of a liter

Milliliter

170

A combination of two or more substances not chemically united and in no definite proportion by mass

Mixture

171

The smallest dose of a poison (or radiation) on record that produces death

Minimum Lethal Dose (MLD)

172

Chemicals for which there may be greatly varying demands predicated upon the type of embalming, the environment, and the arterial fluid to be used

Modifying Agents

173

A chemical formula expressing the number of atoms of each element present in a molecule of a substance, without indicating how they are linked

Molecular Formula

174

The smallest unit of a compound which can exist alone; an aggregation of atoms, specifically a chemical of two or more atoms which form a specific chemical substance

Molecule

175

A charged entity consisting of only a single atom

Monatomic Ion

176

An alcohol with only one hydroxyl ion

Monohydroxy Alcohol

177

N

Nitrogen

178

Na

Sodium

179

Concerned with the composition of a particular kind of matter, the forces holding its parts together, and its observable properties

Nature of Matter

180

A very dense, small, positively charged center of an atom that contains most of the mass of the atom in the form of protons and neutrons

Necleus

181

The reaction of an acid and a base to produce a salt and water

Neutralization

182

A neutral subatomic particle with a mass similar to that of a proton. Normally found in the nucleus of an atom

Neutron

183

Any element which is not a metal. Nonmetals tend to form negative ions

Nonmetal

184

O

Oxygen

185

A common name for a triacylglycerol that is a liquid at room temperature and contains a high percentage of unsaturated fatty acids

Oil

186

-OL

Suffix for an alcohol

187

That branch of chemistry that deals with certain carbon-containing compounds

Organic Chemistry

188

The passage of pure solvent from a solution of lesser solute concentration to one of greater solute concentration when the two solutions are separated by a semipermeable membrane which selectively prevents the passage of solute molecules, but is permeable to the solvent

Osmosis

189

The combination of a substance with oxygen; an increase in oxidation number; a loss of electrons

Oxidation

190

A number used to represent the number of electrons lost, gained, or shared in a chemical change

Oxidation Number

191

A compound consisting of oxygen combined with only one other element

Oxide

192

A method for expressing low concentrations

Parts Per Million (PPM)

193

A polymer of formaldehyde that exists as a solid. Almost pure formaldehyde.
Insoluble, so it cannot be used in embalming fluids
Most commonly used in the powdered preservative compositions such as hardening compounds and embalming powder

Paraformaldehyde

194

Pb

Lead

195

A five carbon sugar

Pentose

196

A bond formed from a dehydration reaction between the amino group on one amino acid with the carboxyl (organic acid) group on the other amino acid

Peptide Bond

197

The tabular arrangement of the elements in order of increasing atomic number so that the columns of elements represent the periodic recurrence of elements with similar properties

Periodic Table

198

Water hardness that cannot be removed by boiling. The addition of chemicals must be used. Permanent hardness is cause by the chloride and sulfate salts of calcium and magnesium

Permanent Hardness of Water

199

The measure of hydrogen ion concentration of a solution

pH

200

An aromatic alcohol and is an excellent disinfectant. Penetrates tissues very well and bleaches tissue where required such as surface discoloration

Phenol

201

A change in the form or state of matter without any change in chemical composition

Physical Change

202

Properties of a substance that are observed without a change in chemical composition, which include color, odor, taste, solubility, density, hardness, melting point, and boiling point

Physical Properties

203

A calcium sulfate often found in hardening compound as a filler that promotes hardening

Plaster of Paris

204

Any substance that imperils health or life when absorbed into the body

Poison

205

A group of that acts as a unit and possesses a charge

Polyatomic Ion

206

Those alcohols having more than one hydroxyl group

Polyhydroxyl Alcohol

207

A large molecule made by linking together a number of monomers, or basic chemical units

Polymer

208

The linking together of monomers or basic chemical units to form a polymer

Polymerization

209

A polymer made by linking together a number of simple sugar molecules. Staches and cellulose

Polysaccharide

210

The nitrate ions are converted by bacteria to nitrite ions which react with hemoglobin to form nitrous-hemoglobin giving the skin a reddish color

Potassium Nitrate

211

Energy that is stored

Potential Energy

212

A deposit of an insoluble or very slightly soluble solid substance in solution

Precipitate

213

Fluids whose purpose is to clear the vascular system of blood and enable the arterial solution to distribute with greater facility

Pre-Injection Fluids

214

Components of embalming solutions used to inactivate the active chemical groups of proteins and amino acids; to inhibit decomposition; to kill microorganisms; destroy odors and to eliminate their further formation; and to inactivate enzymes

Preservatives

215

The force per unit area exerted on a material

Pressure

216

An alcohol in which the hydroxyl (-OH) group is attached to a carbon that is attached to no more than one other carbon

Primary Alcohol

217

Characteristics by which substances may be identified

Properties

218

A biological compound that is a polymer of many amino acids

Protein

219

A subatomic particle normally found in the nucleus of an atom. Has a relative mass number of 1 and an electrical charge or +1

Proton

220

The decomposition of proteins by the action of enzymes from anaerobic bacteria

Putrefaction

221

Surface active agents that are usually used for disinfection of skin, oral, and nasal cavities and instruments

Quaternary Ammonium Compounds

222

Ra

Radium

223

A decrease in oxidation number; a gain of electrons; a combination of a substance with hydrogen

Reduction

224

Supplemental fluids may be separate fluids of ones enhancing arterial fluids by the addition of special chemicals such as humectants

Restorative Fluids

225

Any group of substances that result from the reaction between acids and bases other than water

Salt

226

The reaction between a fat and a strong base to produce glycerol and the salt of a fatty acid (soap)

Saponification

227

A hydrocarbon which contains only single bonds

Saturated Hydrocarbon

228

A solution containing all of the solute the solvent is able to hold at a certain temperature and pressure

Saturated Solution

229

An alcohol in which the hydroxyl (-OH) group is attached to a carbon that is attached to two other carbons

Secondary Alcohol

230

The injection taking place after initial, primary, or first injection

Secondary Injection

231

A compound whose hydrolytic products are fatty acids and alcohols

Simple Lipid

232

A reaction in which a single free element replaces or is substituted for one of the elements in a compounds
A + BC -------> B + AC

Single Replacement REaction

233

Sn

Tin

234

Used to maintain the acid-base balance. Carbonates reduce graying action for formaldehyde action

Sodium Bicarbonate and Sodium Chloride

235

Often used as a water conditioner and for its anticoagulant action in arterial fludis

Sodium Citrate

236

An example of a wetting agent (surfactant) added to embalming fluids to increase penetrability

Sodium Lauryl Sulfate

237

An inorganic salt used to maintain the acid-base balance

Sodium Phosphate

238

An alkaline compound often found in arterial fluids to minimize graying action of HCHO yet will not deactivate it. Also inhibits blood clotting

Sodium Tetra Borate (Borax)

239

The condensed state of matter having a definite shape and volume

Solid

240

`The conversion of a liquid or a gas into a solid form

Solidification

241

The measure of how well two substances mix

Solubility

242

A substance dissolved in solvent to form a solution; the component of a solution present in a lesser amount

Solute

243

A homogeneous mixture of one or more substances (solutes) dissolved in a sufficient quantity of solvent

Solution

244

The process of dissolving

Solvation

245

A substance which does the dissolving in a solution; the component of a solution present in a greater amount

Solvent

246

A polyhydric alcohol that is used as a modifying agent as well as for its humectant qualities

Sorbitol

247

A ratio of densities with water as the standard

Specific Gravity

248

A physical property of matter
Condition of the physical composition of a substance at a given temperature and pressure

State of Matter

249

A chemical formula showing the spatial arrangement of the atoms and the linkage of every atom

Structural Formula

250

A physical change of state during which a substance changes directly from a solid to a gas

Sublimation

251

Additional germicides added to embalming fluids

Supplementary Germicides

252

The material upon which an enzyme works

Substrate

253

The force that acts on the surface of a liquid and tends to minimize surface area

Surface Tension

254

Chemicals that will reduce the molecular cohesion of a liquid and thereby enable it to flow through smaller apertures

Surfactants
Surface Tension Reducers
Wetting Agents
Penetrating Agents

255

A mixture of a solute and a solvent in which the size of the solute particle is greater than 100 nanometers. Particles of solute do not pass through filters or membranes

Suspension

256

Abbreviation for an element

Symbol

257

Means by which heat and cold are expressed. Means to measure how hot or cold a substance is

Temperature Scale

258

Temporary hardness can be removed by boiling and is due to the presence of the bicarbonate salts of calcium and magnesium

Temporary Hardness of Water

259

An alcohol in which the hydroxyl (-OH) group is attached to a carbon that is in turn attached to three other carbones

Tertiary Alcohol

260

The study of those physical and chemical changes in the human body that are cause by the process of death

Thanatochemistry

261

A chemical compound similar to an alcohol, in which the oxygen of the hydroxyl group is replaced by a sulfur atom (-SH)

Thioalcohol (Mercaptan)

262

A poisonous substance produced by higher plants, animals, or pathogenic bacteria that is toxic to humans

Toxin

263

Type of lipid that is formed by the reaction of three fatty acid molecules and glycerol.

Triacylglycerol
Triglycerides
Neutral Fats

264

An alcohol having three hydroxyl groups (Eg Glycerol)

Trihydroxy Alcohol

265

Homogenous mixture of two or more substances able to pass through semi-permeable membrane. The size of the true solute particles is less than one nanometer

True Solution

266

An expression of the fixed ratio between carbon and hydrogen in hydrocarbons

Type Formula

267

An organic compound containing only carbon and hydrogen that has one or more double or more triple bonds between two carbon atoms

Unsaturated Hydrocarbon

268

A solution containing less of the solute than can be held in solution by the solvent

Unsaturated Solution

269

The neutralization product of formaldehyde by ammonia

Urotropin (Methenamine)
C6H12N4

270

A gas, especially the gaseous form of a substance that at ordinary temperature is a liquid or solid

Vapor

271

The physical change from a liquid into a gas

Vaporization

272

Liquids that serve as solvents for the numerous ingredients incorporated into embalming fluids

Vehicles

273

The resistance that a liquid exhibits to the flow of one layer over another arising from the molecular attraction between the molecules of a liquid

Viscosity

274

Having the quality of being easily converted at a relatively low temperature from the liquid to the gaseous state

Volatile

275

A type of lipid formed from the combination of unsaturated and/or saturated fatty acids and high molecular weight alcohols (not glycerol)

Wax

276

The measure of the gravitational pull on an object

Weight

277

Zn

Zinc

278

A protein that acts as a biological catalyst

Enzyme