CHAPTER 12 CHEMISTRY

What is an example of a chemical property?

• Solubility

• Density

• Ability to rust

• Boiling point

There are ________ naturally occurring elements, each with its own distinct physical and chemical properties.

• 68

• 98

• 118

• 138

Why is the study of substances that lack the element carbon, but may contain the element hydrogen?

• Inorganic chemistry

• Physical chemistry

• Stereochemistry

• Biochemistry

What shape of matter has a definite volume but takes the shape of the container?

• Solid

• Liquid

• Gas

• Vapor

A characteristic of all inorganic substances is that they ___________.

• Burn easily

• Contain hydrogen

• Are derived from living things

• Lack carbon

All haircolor products are organic chemicals, which means they _________.

• Are natural and healthy

• Contain non-synthetic ingredients

• Contain carbon and hydrogen

• Lack carbon but may contain hydrogen

A substance, usually liquid, that dissolves another substance to form a solution is a/an ________.

• Solvent

• Immiscible

• Solute

• Solid

Chemical reactions that are characterized by giving off heat are ___________.

• Neutralized

• Acidic

• Oxidized

• Exothermic

The oxidation of haircolor is an example of a __________.

• Physical change

• Chemical change

• Reversible change

• Changes in the state of matter

Air contains many substances, including nitrogen, carbon dioxide, and water vapor, and is an example of a ____________.

• Physical mixture

• Chemical change

• Pure substance

• Chemical compound