PAP Chemistry - 9 weeks Test Review

The two most important properties of all matter are

• the ability to carry an electric current well and to hold electric charge.

• taking up space and having mass.

• being brittle and hard.

• being malleable and ductile.

2. A compound is

• a. a pure substance that cannot be broken down into simpler, stable substances.

• b. a substance, made of two or more atoms that are chemically bonded, that can be broken down into simpler, stable substances.

• c. the smallest unit of matter that maintains its chemical identity.

• d. any substance, whether it is chemically bonded or not.

A measure of the quantity of matter is

• density

• weight

• volume

• mass

Noble gases are in Group 18, and are best known because they are

• unreactive.

• excellent conductors.

• rare.

• lanthanides.

Tags

NGSS.HS-PS1-1

A state of matter in which a material has no definite shape but has a definite volume is the ____ state.

• gas

• liquid

• plasma

• solid

Tags

NGSS.MS-PS1-4

If a mixture is uniform in composition, it is said to be

• homogeneous

• chemically bonded

• heterogeneous

• a compound

If a mixture is not uniform throughout, it is called

• homogeneous

• heterogeneous

• chemically bonded

• a solution

Which of the following is an example of a homogeneous mixture?

• air

• orange juice

• raw milk

• marble

A nonmetal is usually

• brittle

• malleable

• a good conductor

• used to make jewelry

10. Metalloids are often

• unreactive.

• semiconductors.

• lanthanides.

• from outer space.