Chemistry Compend

The oxidation number for the Ammonium Radical is

+1

What is the freezing point of water?

0 degrees Celsius

The percentage by weight of formaldehyde in formalin is

37%

The number of fluid ounces of a 25 index arterial fluid needed to prepare one gallon (128 fl. oz.) of solution with a strength of one percent would be

5.1

Decomposition of the human body is

A chemical change

Which of the following is the result of two or more elements chemically united in a definite proportion by weight?

A compound

Which of the following would NOT be found in a pre-injection fluid?

A high concentration of formaldehyde

Which of the following would NOT normally be present in a cavity fluid?

Active dyes

The digestion of cells by means of their own enzymes is called

Autolysis

Which one of the following chemicals, when contained in water in the form of salts, causes "hard water"?

Calcium

What type of embalming fluids contain high concentrations of disinfectants and preservatives but generally lack active dyes and other modifying agents?

Cavity fluids

Substances that can be decomposed or separated into singular substances are

Compounds

Which of the following is NOT important in determining the shelf-life of an arterial fluid?

Cost of the fluid

What is the function of plaster of paris in hardening compound?

Dehydration

What is benzaldehyde used for in embalming fluids?

Deodorant

What is methyl salicylate used for in embalming fluids?

Deodorant

Which of the following substances is used as a buffer in arterial fluid?

E.D.T.A.

Fundamental types of matter that cannot be converted into other kinds by ordinary chemical means are

Elements

What substance is changed into adipocere by the saponification process?

Fats

Paraformaldehyde is a polymer of

Formaldehyde

How many main classes of inorganic compounds are there?

Four

Which state of matter has no definite volume and no definite shape?

Gases

Which of the following is NOT characteristic of a jaundice fluid?

High index of formaldehyde

Which of the following is NOT a hazardous substance used in embalming fluids?

Hydrogen hydroxide

What is the study of non-carbon compounds?

Inorganic chemistry

Solutions that have the same osmotic pressure are said to be

Isotonic

Which of these is classified as a physical property of water?

It expands when it freezes

Polymerization of formaldehyde is inhibited by the addition of

Methanol

The formula for Magnesium Chloride is

MgCl2

Which of the following can be separated by physical methods?

Mixtures

What is paradichlorobenzene used for in embalming powders

Mold inhibitor

What is the electrical charge of an electron

Negative

Oxygen occurs in the free state as

O2

Which of the following is used only as a filler in autopsy chemical mixtures?

Perlite

Which term is used as a synonymous term for polyatomic ion

Radical

The chemical formula of NaOH denotes which of the following compounds?

Sodium hydroxide

Which of the following is a physical property of matter?

Solubility; specific gravity; density

A humectant commonly used in embalming fluids is

Sorbitol

Which of the following solutions contains the most solute?

Supersaturated

What are sulfonate compounds used for in embalming fluids?

Surface active agents

Which of the following is not a chemical change?

Tearing of paper

The atomic number of an element is equivalent to

The total number of it's protons or electrons

Which of the following statements is FALSE concerning arterial fluids?

They are normally injected into body cavities

The function of glycerol in embalming fluids is

To act as a humectant

The formula R-OH is

a general formula

Chlorine is

a halogen

Two or more substances that are combined together but are NOT chemically combined form

a mixture

Two or more atoms of the same element form

a molecule

A charged group of atoms functioning as a single unit in a chemical reaction is

a polyatomic ion

The function of methanal in embalming fluids is

a preservative

A positively charged particle in the nucleus of an atom is

a proton

A group of atoms functioning as a single atom in a chemical reaction

a radical

Sodium lauryl sulfate is used in embalming fluids as

a surfactant

Another name for ethanoic acid is

acetic acid

Oxygen means

acid former

Borax is used in embalming fluids to

adjust pH

The hydrolysis of proteins yields

amino acids

Upon hydrolysis, proteins yield

amino acids

Sodium citrate, when used in embalming fluids, functions as a/an

anticoagulant

Citrates and oxalates are usually added to embalming fluids to act as

anticoagulants

If a solution is acid, its pH will be

below seven

Adipocere is a derivative of

body fats

Organic chemistry is a study of

carbon compounds

The science that deals with the nature of matter and the changes that matter undergoes is

chemistry

Proteins are compounds

composed of many amino acids linked together

Substances which will pass through the pores of animals and vegetable membranes are

crystalloids

Eosine, ponceau, and erythrosine are used in embalming fluids as

dyes

A trihydroxy alcohol found in both embalming fluids and in the structure of lipids and fats is

glycerol

A substance in embalming fluid which serves to retain moisture in the body is known as a

humectant

In arterial fluids, glycols act as

humectants

The main constituent of an acid is

hydrogen

The most abundant element in the universe is

hydrogen

The splitting apart of a compound by water is called

hydrolysis

The study of matter derived from inanimate or lifeless things is

inorganic chemistry

Compounds which have identical molecular formulas but different structural formulas are

isomers

Deodorants are used in embalming fluids as

masking agents

Anything that occupies space and possesses mass is

matter

The most common form of oxygen is

molecular oxygen

Two or more atoms of different elements forms

molecules

The passage of a solvent through a semipermeable membrane from an area of lesser concentration to an area of higher concentration is

osmosis

The swelling of a body during embalming is due to

osmosis

The most abundant element on earth is

oxygen

Acidity or alkalinity is conveniently expressed by a scale of

pH values

Of the following, the class of chemicals that are used as humectants in embalming fluids are

polyhydric alcohols

Phenol is used in embalming fluids as a

preservative

Formaldehyde in terms of embalming, is used as a

preservative; disinfectant

Mercuric chloride is a good disinfectant. It is

prohibited by law

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

promote blood clotting

Of the following, the one that is used in embalming fluids as an anticoagulant is

sodium citrate

Paraformaldehyde is formaldehyde in a

solid state

The passage of a solid substance directly into the gaseous state is

sublimation

The chemical used in embalming fluids to reduce surface tension and to aid in penetration, is known as a/an

surfactant

An abbreviation for the name of an element is

the atomic symbol

The class of compounds used in embalming fluids as perfuming agents is

the esters

The total amount of formaldehyde required to preserve all the protein in the body is

the formaldehyde demand

A solution in which more solute can be dissolved at a given temperature is

unsaturated

Water, when used in embalming fluids, is used as a

vehicle

In use with embalming fluids, water and methyl alcohol are two examples of

vehicles

Of all chemical compounds, the most depended upon by plants and animals is

water

The important vehicle for an arterial solution is

water