Properties of Matter

Anything that has mass and takes up space.

• pure substance
• energy
• matter
• mixture

True or false: All matter is made up of tiny particles closely packed together.

• True
• False

True or False: The particles that make up matter are in constant random motion.

• True
• False

Which answer best completes the following sentence:

The particles of a substance move _____ as the temperature decreases.

• more quickly

• more slowly

• at the same rate

When a substance is in a gaseous state, the particles

• are no longer attracted to each other
• are still very close to each other
• have so much energy that they are too far apart to affect each other much
• don't have any thermal energy

This type of substance is made up of only one type of particle.

• a pure substance
• a mixture
• a mechanical mixture
• a solution

Which of the below is an element?

• H₂O
• carbon
• carbon tetrafluoride
• all of them are elements

Which of the below is a pure substance?

• NaCl
• I
• CH₄
• all of them are pure substances

Tin and lead can be mixed together to form solder (pronounced "sodder"). Solder is an example of

• an alloy
• a solution
• a mixture
• all of these answers are correct

True or False: Tap water is a pure substance.

• True
• False