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MOR 243: Thanatochemistry > Mid-Term: Chapters 1 - 12 > Flashcards

Mid-Term: Chapters 1 - 12 Flashcards

1
Q

In Boyle’s law if the pressure increases then:

A

The volume must decrease

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2
Q

Composed of two or more nonchemically united substances that are in no definite proportion by mass

A

Mixture

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3
Q

This law states that when two or more elements combine, they always combine in a fixed or definite proportion by mass

A

Law of definite proportions

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4
Q

The majority of the weight of an atom is found in the:

A

Nucleus

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5
Q

This type of particle has a negative charge

A

Electron

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6
Q

The atomic number is equal to the number of

A

Protons

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7
Q

A “p” orbital can contain a maximum of _____ electrons

A

6

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8
Q

Atoms of the same atomic number and different masses are called:

A

Isotopes

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9
Q

Atoms in group VII A have a tendency to:

A

Gain electrons

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10
Q

An equal sharing of electrons is found in _____ bonds

A

Covalent

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11
Q

Oxidation numbers:

A
  • Are positive or negative numbers
  • Show whether atoms bond to other atoms by gaining or losing electrons
  • Are written at the top right hand corner of the elements symbol
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12
Q

Fe is the symbol for:

A

Iron

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13
Q

NH4+ is called the _____ ion

A

Ammonium

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14
Q

Substances written to the left of the arrow in a chemical equation are called:

A

Reactants

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15
Q

Symbols are abbreviations for a chemical change. (T/F)

A

False

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16
Q

The reaction of an acid with a base to form water and a salt is an example of a _____ reaction

A

Neutralization

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17
Q

The spontaneous decay of nuclei is:

A

Radioactivity

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18
Q

This type of radiation travels as a wave

A

Gamma

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19
Q

A positron results from _____ decay

A

Beta

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20
Q

The addition of oxygen to a substance is one definition for:

A

Oxidation

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21
Q

When embalming a radioactive body the amount of time you spend near the body does not matter. (T/F)

A

False

22
Q

This substance speeds up a chemical reaction yet appears in unchanged form among the products

A

Catalyst

23
Q

An increase in oxidation number is one definition for:

A

Oxidation

24
Q

An allotrope is when an element exists in two or more different forms each with its own physical and chemical properties. (T/F)

A

True

25
Q

Water has a higher boiling point than expected because of its:

A

Hydrogen bonding

26
Q

Permanent hardness in water cannot be removed by boiling. (T/F)

A

True

27
Q

Why shouldn’t you use hard water when embalming?

A

Hard water contains calcium ions which cause clotting

28
Q

A solution containing a relatively small amount of solute

A

Dilute

29
Q

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

A

Saturated

30
Q

Formalin is

A
  • 37% formaldehyde by mass

* 40% formaldehyde by volume

31
Q

A red blood cell placed in a hypertonic solution will:

A
  • Shrink

* Crenate

32
Q

Formaldehyde is not pH dependent. (T/F)

A

False

33
Q

A negative ion is called a/an:

A

Anion

34
Q

A substance that increases the OH- concentration is a:

A

Base

35
Q

A substance that donates a pair of electrons is a/an:

A

Base

36
Q

This substance is a proton acceptor

A

Base

37
Q

The study of compounds usually containing elements other than carbon, especially minerals found in the earth

A

Inorganic chemistry

38
Q

Anything that occupies space and possesses mass

A

Matter

39
Q

The standard unit of measurement used for heat is the:

A

Calorie

40
Q

Decomposition of a human body is an example of a physical change. (T/F)

A

False

41
Q

Sublimation is the process where a substance goes from the liquid to the solid state. (T/F)

A

False

42
Q

Substance that cannot be decomposed by further chemical means

A

Elements

43
Q

The temperature at which a substance changes from the liquid state to the gaseous state

A

Boiling point

44
Q

What are the states of matter?

A
  • Solid
  • Liquid
  • Gas
45
Q

What physical property is defined as mass/volume?

A

Density

46
Q

Changes from one state of matter to another is an example of a _____ property

A

Physical

47
Q

A substance containing only two substances, one of which is oxygen

A

Oxide

48
Q

If we go from a solid to a gas then heat is:

A

Absorbed

49
Q

The amount of heat necessary to convert 1 gram of a solid to 1 gram of a liquid at the substance’s melting point

A

Heat of fusion

50
Q

Any reaction that liberates heat is said to be:

A

Exothermic

MOR 243: Thanatochemistry (38 decks)

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