Exam 1 Questions

Question 1

What is the term for the study of chemical substances that do not contain carbon?

Answer 1

Inorganic Chemistry

Question 2

Organic chemistry is best defined as the study of:

Answer 2

Compounds that are largely composed of carbon and hydrogen

Question 3

Chemistry is the branch of physical science that studies the ________ of matter.

Answer 3

Composition, structure, and properties

Question 4

Thanatochemistry is that branch of chemistry that deals with _________.

Answer 4

The chemical processes in dead things

Question 5

Biochemistry is that branch of chemistry that deals with _________.

Answer 5

The chemical processes in living things

Question 6

A process that releases heat into its surrounds is said to be:

Answer 6

Exothermic

Question 7

______ is the condensed state of matter having a definite shape and volume.

Answer 7

Solid

Question 8

______ is a substance that flows readily but does not tend to expand indefinitely.

Answer 8

Liquid

Question 9

______ is the state of matter where a substance has no fixed shape and its molecules are in constant random motion and subsequently diffuse to fill all available space.

Answer 9

Gas

Question 10

______ the separation of a complex chemical compound into simpler compounds or elements.

Answer 10

Decomposition

Question 11

The gravitation of red blood cells to dependent parts of the body is defined as:

Answer 11

Livor mortis

Question 12

The postmortem temperature change of a body to ambient temperature is defined as:

Answer 12

Algor mortis

Question 13

______ is the movement of a substance from an area of greater concentration to one of lesser concentration.

Answer 13

Diffusion

Question 14

A type of mixture in which the composition is uniform and every part of the solution has the same properties:

Answer 14

Homogeneous

Question 15

A type of mixture in which the components are not uniform, at a minimum two phases are present:

Answer 15

Heterogeneous

Question 16

Substances that cannot be divided by chemical means?

Answer 16

Elements

Question 17

Substances composed of two or more elements chemically in a definite proportion by mass?

Answer 17

Compounds

Question 18

18. The smallest unit of matter is with the unique properties of an element is ________.

Answer 18

An atom

Question 19

Atomic mass denotes ____.

Answer 19

Total number of protons and neutrons

Question 20

Isotopes are _________.

Answer 20

Atoms with the same number of protons but different numbers of neutrons

Question 21

Valence refers to the ____________ of an atom.

Answer 21

Outer most (furthest from the nucleus) energy level

Question 22

Nitrogen has a valence of five, this means it will want to share _________ more electrons.

Answer 22

Three

Question 23

For atoms, happiness is achieved via __________ valence electrons, this is called the _______rule.

Answer 23

8
Octet

Question 24

A region of a molecule posing a negative and a positive charge.

Answer 24

Dipole

Question 25

The number of ______ determines the chemical properties.

Answer 25

Electrons

Question 26

The atomic mass of formaldehyde is (CH2O, C= 12.0, H=1 amu, O=16 amu)

Answer 26

30amu

Question 27

AB → A+B represents a __________ reaction.

Answer 27

Decomposition

Question 28

As a body decomposes ________ is occurring. This reaction is water splitting apart macro-molecules.

Answer 28

Hydrolysis

Question 29

You decide to use plaster of Paris as you are repairing a traumatized cranial vault. AS you mix this compound with water a paste formed that will harden into __________ and set the bones of the head.

Answer 29

Gypsum

Question 30

__________ is the most common vehicle in embalming solution

Answer 30

Water

Question 31

You are mixing an embalming fluid with a formaldehyde concentration of [35] (______) into water(___________) to create a solution.

Answer 31

Solute/ solvent

Question 32

You are about to embalm a body with edema. You decide you will need to dehydrate the tissue and need to create a _________ solution.

Answer 32

Hypertonic

Question 33

You are about to embalm a body that is dehydrated. You decide you will need to hydrate the tissue and need to create a _________ solution.

Answer 33

Hypotonic

Question 34

When combining solutions of unequal solute concentration, the natural movement of solute from regions of lower concentration to a higher concentration is referred to as_______.

Answer 34

Osmosis

Question 35

Two liquids that form a completely homogenous solution are said to be______while two liquids that simply don’t mix (oil and water for example) are said to be _________.

Answer 35

Miscible/immiscible

Question 36

Tap water that has minerals such as Ca2+ and/or Mg2+ dissolved in it is defined as ________water.

Answer 36

Hard

Question 37

What is the general term for a substance that dissolves in a solvent?

Answer 37

Solute

Question 38

What is the general term for the substance that dissolves a solute?

Answer 38

Solvent

Question 39

A heterogeneous mixture that contains a completely dissolved solute is referred to as a:

Answer 39

Solution

Question 40

An unknown compound is initially a white crystal, but upon standing for one day a clear solution forms. The unknown compound is therefore:

Answer 40

Deliquescent

Question 41

What happens to the pH of a body following death?

Answer 41

The body initially gets more acidic but over time becomes more basic

Question 42

What is the term for a solution that resists changes in pH when an acid or a base is added?

Answer 42

Buffer

Question 43

Water has the ability to act as an acid and a base, this is termed ___.

Answer 43

Amphoteric

Question 44

pH is a measure of ____ in aqueous solution

Answer 44

[H+]

Question 45

Which property below does not apply to an acid?

Answer 45

Feel soapy

Question 46

Which property below does not apply to a base?

Answer 46

Taste sour

Question 47

Translated literally, hydrolysis means:

Answer 47

Water splitting

Question 48

AB +CD → AC+BD represents a __________ reaction.

Answer 48

Double replacement