Properties of Water Q1

What two elements make up water?

• Helium and oxygen
• Hydrogen and oxygen
• helium and carbon
• oxygen and carbon

What word describes when water is attracted to other substances?

• cohesion
• adhesion
• capillary action
• surface tension

The attraction that causes water and other liquids to form drops on thin films is called ________________. This is also water’s ability to be attraction to other water molecules.

• adhesion
• capillary action
• cohesion
• surface tension

Which is NOT a unique property of water?

• Frozen water floats on liquid water.
• Water covers most of the Earth’s surface and retains a large amount of heat.
• Water molecules stick to each other through hydrogen bonds.
• Water cools very rapidly.

What property of water helps to moderate earth's temperature?

• adhesion

• cohesion

• specific heat capacity

Why does ice float?

• As water freezes, it expands and its density decreases.
• As water freezes, it takes up more hydrogen from the atmosphere, causing it to have a greater buoyancy.
• As water freezes, air becomes trapped between the hydrogen bonds of water molecules.
• As water freezes, it takes up more oxygen from the atmosphere, causing it to have a greater buoyancy.

What is adhesion?

• Hydrogen bond form between water and other polar molecules

• Weak imolecular force

• transpiration

What is cohesion?

• Weak molecule bonds at the surface

• Strong molecule bonds at the surface bonding together

What is one example of adhesion?

• raining 
• Rain drops sticking together On a car windshi

True or false : Cohesion is the bonding of water molecules to water molecules.

• False
• true