Matter CCA Review

When water is heated to the boiling point it -

• condenses
• evaporates
• precipitates
• accumulates

 A student combined powdered paint with water to make a small amount of a blue liquid paint mixture. The student left the paint mixture in an open container. Several days later the student found the container and observed that changes had occurred. What most likely happened to the mixture?

• The container was empty after the mixture evaporated into the air. 
• The paint evaporated, leaving only clear water in the container.
• The water evaporated, leaving only a dry blue solid in the container.  
• The liquid paint mixture was lighter in color after some water evaporated.  

Which of these is NOT soluble in water?

• oil
• salt
• honey
• sugar

What is usually necessary  when separating a solution ?

• magnets
• evaporation
• tweezers
• thermometer

Example of:

• the particles in a solid
• the particles in a liquid
• the particles in a gas
• the particles in plasma

Which best describes why you would add water to a  mixture of sawdust and sand when separating it ?

• the sand and sawdust would mix forming a solution
• the sand would dissolve leaving the sawdust
• the sand would sink to the bottom and the sawdust would float to the top
• the sawdust would sink to the bottom and the sand would float to the top

A student puts four objects in a bucket filled with water. The objects are listed below. Which two objects are most likely less dense than the water?
• Plastic ball
• Glass marble
• Metal paper clip
 • Wood block 

• Wood block and metal paper clip
• Plastic ball and glass marble
• Metal paper clip and glass marble
• Wood block and plastic ball

A solution is a special type of mixture in which one of the items is -

• disappearing
• evaporating
• dissolving
• condensing

In a Solution, the item being dissolved is - 

• the solution
• the solute
• the solvent
• the answer

When placed in a container full of water, which of the following would create a solution ?

• sand
•  pebbles 
•  pepper 
• salt