ch 12 - basics of chemistry

A(n) ___ is an unstable physical mixture of undissolved particles in a liquid.

A chemical combination of two or more atoms of different elements in definite proportions is an):

Substances lacking the element ____ are classified as inorganic.

Ointments, pastes, and pomades are:

A(n) __ is a substance that dissolves another substance to form a solution.

There are __ naturally occurring elements.

A chemical combination of matter in definite (fixed) proportions is called a(n):

The rapid oxidation of a substance, accompanied by the production of heat and light, is called:

Volatile organic compounds contain ___ and evaporate very easily.

Which of the following is a special type of oil used in water-resistant lubricants for the skin?

When stored under ideal conditions, a properly formulated emulsion can be stable for up to:

Steam is an example of a:

An elemental molecule is a molecule containing:

Matter does NOT exist in which form?

Any substance that occupies space and has mass (weight) is considered:

An oxidizing agent:

Two or more immiscible substances combine with a special binding ingredient to create a(n):

The __ is the substance that is dissolved into a solution.

The term pH represents the quantity of ____ ions.

Which of the following is an oily substance used as moisturizer in skin and body creams?

Which of the following is NOT a physical mixture?

A water-in-oil emulsion:

Nail polish is an example of a(n):

A __ is a physical combination of matter in any proportions.

A(n) _ is an alkaline substance used to neutralize acids or raise the pH of hair products.

An atom or molecule that carries any electrical charge is called a(n):

Which statement about surfactant molecules is correct?

Sodium hydroxide, commonly known as ____, is a very strong alkali used in chemical hair relaxers, callous softeners

Pure water has a pH of:

Only products that contain __ can have a pH.

Protons are subatomic particles with which type of charge?

A(n) ___ is a chemical combination of two or more atoms in definite (fixed) proportions.

Which of the following, also called a base, is a compound that reacts with acids to form salts?

Which of the following is a colorless gas with a pungent odor composed of hydrogen and nitrogen?

A reducing agent is a substance that adds _____ to a chemical compound or subtracts oxygen from the compound.

A(n) __ releases a significant amount of heat.

A stable physical mixture of two or more substances is a(n):

A substance’s state of matter depends on its:

An ion with a positive electrical charge is called a(n):

A ___ is a substance that allows oil and water to mix, or emulsify

If two liquids are mutually soluble, they are considered:

The simplest form of chemical matter is a(n):

In an oxidation-reduction reaction:

Which of the following is an example of a chemical property?

Characteristics of matter that do not involve chemically changing a substance are called ___ properties.

The study of substances that contain carbon is called __ chemistry.

Rubbing alcohol and hair spray are examples of:

When acids and alkalis are mixed together in equal proportions, they form:

A(n) __ is the basic unit of matter.

When a substance undergoes a __ change, a new substance with different properties is created.