BA Ch.07 PT - Basics of Chemistry

Organic substances contain:

• Sodium

• Mercury

• Carbon

• Hydrogen

__________ is an example of an inorganic substance.

• Metal

• Synthetic fabric

• Gasoline

• Plastic

A(n) __________ is a substance that cannot be separated into simpler substances by chemical means.

• atom

• compound

• element

• mixture

The change that occurs in burning wood through oxidation is a(n) __________ change.

• physical

• chemical

• elemental

• compound

An example of a chemical change, such as iron to rust, is:

• Shampooing

• Rinsing

• Permanent haircolor

• Temporary haircolor

__________ is an example of a chemical compound.

• Water

• Wax paper

• Aluminum foil

• A pure substance

The four classifications of compounds are acids, bases, salts, and:

• Mixtures

• Oxides

• Substances

• Alkalis

__________ is considered to be a universal solvent.

• Alcohol

• Peroxide

• Bleach

• Water

Soaps lather easily in the presence of:

• Soft water

• Hard water

• Mineral water

• An emulsion

The pH of a water-based solution measures its degree of:

• Softness or hardness

• Acidity or alkalinity

• Temperature

• Neutrality