chapter test ( chapter 10 )

The material that dissolves in water to make a solution is called the ________.

• solute

• solvent

• soluble

• mixture

Is melting butter for popcorn a chemical or physical change?

• chemical

• physical

The change from liquid to solid, or the reverse of melting, is called ------------------------.

• freezing

• condensation

• boiling

• sublimation

----------------------- Feels slippery.

• Acids

• Bases

• neutral

• All

Colloids have particles that are dispersed and don't settle at the bottom.

• true

• false

When a solid reaches the temperatures of its --------------------, it become a liquid.

• melting point

• freezing point

• boiling point

• density

----------------------turns red litmus paper blue.

• Acids

• Bases

• Salts

• All

What is happening at the boiling point?

• liquid changes to gas

• gas changes to liquid

• solid changes to liquid

• liquid changes to solid

if a solution pH is less than 7 then this solution is ---------------------

• Acids

• Bases

• All

What can you do to separate salt from water?

• Add additional water.

• Take some water out.

• Let it stand in the sun for a while.

• Decrease the temperature of the water.