Ch2: State of Matter Flashcards
Postmortem change is a _____ change
Chemical change
Staining of tissue due to chemical breakdown of red blood cells (aka post mortem stain)
Hemolysis
Changes that don’t affect the chemical composition of the matter; some could be reversible but not always
Physical Change
What are some physical properties?
odor, color, taste
Ability of solute to dissolve in solvent
Solubility
Change the chemical composition of matter; cannot be reversible
Chemical Change
Gas may increase its volume when heated
Expansivity
Gas may decrease its volume when cooled
Compressibility
The separation of a complex chemical compound into simpler compounds or elements
Decomposition
Continuation of cellular metabolism after death
Post mortem calcity
Postmortem cooling of body to ambient temperature (usually room temp)
Algor Mortis
Slowing and settling of fluids to dependent portions of body due to gravity
Hypostatis
Intravascular settling of blood to most dependent parts of body (due to gravity)
Liver Mortis
Loss of moisture from body via evaporation
Dehydration
Process absorbing heat (energy)
Endothermic
Process releasing heat (energy)
Exothermic
The movement of arterial solution from the point of injection to capillaries
Distribution
The movement of a substance from an area of greater concentration to one of lesser concentration
Diffusion
A mixture in which the solute is uniformly dissolved into the solvent
Solution
A heterogenous mixture in which the solute particles are larger than 1.0 micrometer
Suspension
A chemical that reduces surface tension; facilitates distribution and diffusion
Surfactants
Type of mixture, components are not uniform, at minimum 2 are present
Heterogenous
Components are uniform (can’t tell where one ends and one begins)
Homogenous
What is blood viscosity? How does it affect embalming?
Increase causes sludge to be created and intravascular resistance. Makes it harder for embalming fluid to go thru whole body equally
