Big Final Review for Unit 5 Water

When a molecule has an opposite electrical charge on each end, it is known as what?

• cohesion
• polar molecule
• hydrogen bond
• solution

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

When water and other liquids stick together to form drops or thin films called ________________.

• adhesion

• capillary action

• cohesion

• surface tension

The fact that ice floats on liquid water is due to the fact that water's solid is ___________ than it's liquid form

• less polar
• more polar
• less dense
• more dense

Water is a universal solvent because it...

• It can be found anywhere
• It freezes when it gets cold
• floats when frozen
• Dissolves most substances

The process by which a gas changes back into a liquid when heat is taken away.

• evaporation
• condensation
• precipitation
• freezing point

How can you change liquid water into water vapor?

• by freezing the water
• by dissolving salt in the water
• by cooling the water
• by heating the water

A student is heating a pan of water.  What happens to the molecules as the temperature of the water gets hotter?

• the molecules move faster
• the molecules stop moving
• the molecules move slower
• there is no change in the movement of the molecules

What is the attractive force between two bodies of different substances that are in contact with each other? This is the property of a water molecule that allows it to stick to other substances.

• adhesion

• cohesion

• specific heat

• universal solvent

Water can dissolve many substances because....

• It is a polar molecule, with a negative charge on the Oxygen side of the molecule and a positive charge on the Hydrogen end

• It has a freezing point of 0 degrees Celsius

• It has a melting point of 0 degrees Celsius

• It covers 97% of the Earth's surface