What do plants take from the air that helps them make food? OPTIONS:
- oxygen
- nitrogen
- carbon dioxide
- hydrogen peroxide
A: carbon dioxide

Water moves by capillary action through soil from moist areas to dry areas. Which property of water is most responsible for this capillary action? OPTIONS:
- Water is a polar molecule.
- Water contains an oxygen atom.
- Water has a high surface tension.
- Water has a high specific heat.
A: Water has a high surface tension.

An important rule for students to know when heating a test tube is to OPTIONS:
- place a cork in the mouth of the test tube.
- point the mouth of the test tube away from others.
- hold the test tube loosely with the fingertips.
- shake the test tube forcefully to keep contents mixed.
A: point the mouth of the test tube away from others.

In which way are evaporation and condensation similar? OPTIONS:
- Both cause decreases in air temperature.
- Both cause increases in air temperature.
- Both are caused by the warming of the atmosphere.
- Both are caused by changes in heat energy.
A:
Both are caused by changes in heat energy.