Ch2: State of Matter

Question 1

Postmortem change is a _____ change

Answer 1

Chemical change

Question 2

Staining of tissue due to chemical breakdown of red blood cells (aka post mortem stain)

Answer 2

Hemolysis

Question 3

Changes that don’t affect the chemical composition of the matter; some could be reversible but not always

Answer 3

Physical Change

Question 4

What are some physical properties?

Answer 4

odor, color, taste

Question 5

Ability of solute to dissolve in solvent

Answer 5

Solubility

Question 6

Change the chemical composition of matter; cannot be reversible

Answer 6

Chemical Change

Question 7

Gas may increase its volume when heated

Answer 7

Expansivity

Question 8

Gas may decrease its volume when cooled

Answer 8

Compressibility

Question 9

The separation of a complex chemical compound into simpler compounds or elements

Answer 9

Decomposition

Question 10

Continuation of cellular metabolism after death

Answer 10

Post mortem calcity

Question 11

Postmortem cooling of body to ambient temperature (usually room temp)

Answer 11

Algor Mortis

Question 12

Slowing and settling of fluids to dependent portions of body due to gravity

Answer 12

Hypostatis

Question 13

Intravascular settling of blood to most dependent parts of body (due to gravity)

Answer 13

Liver Mortis

Question 14

Loss of moisture from body via evaporation

Answer 14

Dehydration

Question 15

Process absorbing heat (energy)

Answer 15

Endothermic

Question 16

Process releasing heat (energy)

Answer 16

Exothermic

Question 17

The movement of arterial solution from the point of injection to capillaries

Answer 17

Distribution

Question 18

The movement of a substance from an area of greater concentration to one of lesser concentration

Answer 18

Diffusion

Question 19

A mixture in which the solute is uniformly dissolved into the solvent

Answer 19

Solution

Question 20

A heterogenous mixture in which the solute particles are larger than 1.0 micrometer

Answer 20

Suspension

Question 21

A chemical that reduces surface tension; facilitates distribution and diffusion

Answer 21

Surfactants

Question 22

Type of mixture, components are not uniform, at minimum 2 are present

Answer 22

Heterogenous

Question 23

Components are uniform (can’t tell where one ends and one begins)

Answer 23

Homogenous

Question 24

What is blood viscosity? How does it affect embalming?

Answer 24

Increase causes sludge to be created and intravascular resistance. Makes it harder for embalming fluid to go thru whole body equally