Review for Unit A True and False

Matter is defined as anything that has mass and takes up space. (True/False)

• True
• False

Soil is an example of a homogeneous mixture.

• True
• False

Air is a heterogeneous mixture because it is made up of different types of gases. (True/False)

• True
• False

In a solution, the solute is always present in a larger quantity than the solvent.

• True
• False

The Periodic Table can tell us whether a substance is a solid, liquid, or gas at room temperature. (True/False)

• True
• False

Metals are generally non-shiny, brittle, and poor conductors of heat and electricity. (True/False)

• True
• False

An atom consists of a nucleus surrounded by electrons, which have a positive charge. (True/False)

• True
• False

Acids turn blue litmus paper red, and have a sour taste. (True/False)

• True
• False

Bases feel slippery and turn red litmus paper blue. (True/False)

• True
• False

A pH value of 7 indicates a strong acid. (True/False)

• True
• False