Embalming Chemistry FTCC Midterm

Examples of colloids would be:

Mayonnaise Muddy water milk butter jelly

The product of decomposition that causes the pH of a dead body to change:

Methane?

Acid

More than one

Hydrogen

More than one

If a red blood cell is placed in a hypotonic solution, which of the following occurs:

Movement of water into the RBCs

If a red blood cell is placed in a hypotonic solution, which of the following scenarios will most likely occur?

Movement of water into the RBCs

A product of reaction between HCHO and ammonia?

Neutralization

Produces chemically pure water

None

The chemical reaction between a salt and water:

None; salt dissolves

NaCL is an example of a:

Normal Salt

In the chmical reaction forming carbon dioxide, carbon has an increase in the oxidation #. Carbon has undergone:

Oxidation

The type of water hardness which will not be affected by boiling:

Permanent Hardness

A solution, which is hypotonic to blood, will cause red blood cells to:

Plump and burst; undergo hemolysis

In the compound water, the majority of hardness is caused by:

Presence of metallic salts

Colloids are:

Protoplasm Blood plasma egg white solutions Mayonnaise Smoke

In a chemical reaction forming CO2, carbon loses electrons and oxygen gains electrons. Oxygen has undergone:

Reduction

In a chemical reaction forming CO2, the oxidation number of oxygen decreases. Oxygen has undergone:

Reduction

The name given to the chemical reaction in which oxygen is removed from a substance is:

Reduction

A solution, which is hypertonic to blood, will cause red blood cells to:

Shrink ; undergo crenation

In a true hydrolysis reaction, what is possible?

Strong acid + strong base

Contains more solute than it can dissolve at ordinary times under ordinary conditions:

Supersaturated

The phenomenon resulting from the uneven attraction that exists between the molecules at the surface of a liquid.

Surface tension

The chemical used in embalming fluids to reduce surface tension and to aid in its penetration is known as:

Surfactant

Particles settle out on standing in:

Suspensions

Which of the following are true in reference to acids:

Taste sour react with bases to form salts name ends in "ic" or "ous"

Which of the following is not a chemical reaction?

Tearing of paper

Oxidation reaction will always result in:

The removal of electrons

In hydrolysis reactions, the resulting solution formed yielding sodium hydroxide and carbonic acid turns red litmus paper blue

True

Sodium Hydroxide is a strong base

True

Hydrolysis is a:

Water reaction Chemical reaction

Arrhenius

Yields H+

Neutron:

a subatomic particle having no charge

Salt + water in a typical hydrolysis reaction yields:

acid and base

Negatively charged ions in a solution are called

anions

In reference to neutral solutions, H+ and OH- ion concentrations:

are equal in number

Hydrogen:

burns with a hot, blue flame forms water

For a substance to be classified as an electrolyte, it must:

conduct electricity

Oxygen, hydrogen, and nitrogen in our atmosphere:

do not usually exist as monatomic atoms usually exist as diatomic molecules of the same element

The passage from a liquid state to a gaseous state is called:

evaporation

Another name for methanal is:

formaldehyde

Reactants, such as water and sodium chloride combined, will result in the product(s):

hydrochloric acid

The chemical reaction between salt and water is known as:

hydrolysis

Bronsted-Lowry

is a proton donor

An exothermic reaction

liberates heat Gas changes to a solid

The factor which determine solubility are:

makeup of the solute and solvent temperature and pressure

Oxidation and reduction reactions always:

occur in the same reaction

Oxygen

occurs as a homonuclear diatomic molecule is highly electronegative is a group VI A element

In the chemical reaction forming carbon dioxide, carbon has an increase in the oxidation number. Carbon has undergone:

oxidation

Orbital

pathways in which electrons travel in their shells around the nucleus

Water of a high mineral content, such as hard water, tends to:

promote blood clotting

Distillation of a given sample of water will:

remove almost all impurities

Deliquescent substances are used in the funeral industry to:

remove moisture from inside caskets Inhibit fungal growth in caskets

Electronegativity decreases in moving from:

right to left

To hasten the hardening of Plaster of Paris, ________ should be used:

salt and warm water

A normal case:

should be embalmed in a slightly hypotonic solution

Particles do not settle on standing

true solutions suspensions

Family:

vertical columns of elements on the periodic table

Lavoisier gave oxygen a secondary name

"Acid former" Its chemical formula is O2

The most stable form of oxygen is:

02 or diatomic oxygen

The pH of gastric juice is approximately:

1-3

Formalin is _______ by weight and ________ by volume

37% & 40%

Synthesis reaction:

A + B yields AB

Double replacement reaction

AB + CD yields AD + BC

In a neutralization reaction, the reactants are:

Acid and base

The normal pH of human blood is

Alkalinic

Oxygen

All

An element that exists in two or more different forms, each with its own physical and chemical properties:

Allotrope

This substance can neutralize formaldehyde

Ammonia

Sodium citrate is used in embalming fluids as a/an:

Anticoagulant

The smallest particle of an element capable of entering into a chemical reaction

Atom

Which substances form a salt when added to an acid?

Base Carbonate Bicarbonate

By acquiring an electron, a Group VII element may:

Become more of a noble gas

Removes some soluble solids and bacteria

Boiling

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

Boiling point

The net result of neutralization under ideal conditions would be:

Both the acid and the base lose their characteristics

Random movements of particles

Brownian motion

Which of the following chemicals when contained in water in the form of salts, cause hard water?

Calcium

Removes only bacteria

Chlorination

Which of these is a suspension:

Clay and water milk of magnesia milk of lime

________ will pass through filters but not membranes

Colloids

The process used to separate colloidal solutes by means of a specially treated semipermeable membrane

Dialysis

Small amount of solute in relation to solvent

Dilute

Hydrolysis is ___________ reaction:

Double replacement Decomposition

Any process that absorbs heat

Endothermic When water of crystallization is added to a compound (more than one)

An expression that represents a chemical reaction:

Equation

The process of fully hydrating calcium sulfate is a _______ reaction

Exothermic

The first element of radical listed in the molecular formula of a typical acid is:

H

An acid in an aqueous solution will yield

H+

In reference to neutral solutions, H+ and OH- ion concentrations:

H+ and OH- ions are equal in number

Mercury

Hg

An acid in an aqueous solution will yield:

Hydrogen ions

According to Arrhenius's original theory, an acid in an aqueous solution will dissociate to yield:

Hydrogen ions (H+ ions)

The splitting apart of a compound by water is:

Hydrolysis

Hydrates which readily absorb moisture are called:

Hygroscopic

Having greater osmotic pressure than other with which it is compared

Hypertonic

The valence electrons affecting metallic and non-metallic compounds are located:

In the outermost orbital ring

Oxidation reactions always result in:

Increase in oxygen Decrease in hydrogen Removal of electrons Increase in the oxidation numbers

Which is not a method of water purification?

Ion exchange

Ammonia is of importance to the embalmer because:

It increases formaldehyde demand It neutralizes formaldehyde