Mixtures and Solutions

A combination of 2 or more substances that cannot be easily separated is called- 

• a mixture
• a solution 
• a solute 
• a solvent 

Solvent...

• Dissolves things
• Does not dissolve things
• Can dissolve in water
• Cannot dissolve in water

Which of the following is a method of separating solutions?

• hand separation
• filtering
• screening
• evaporation 

To separate a mixture of salt and water what separation tool/method is used?

• Filter
• Screen
• Magnet
• Evaporation

If you spilled nails in a sandbox, what separation tool/method could you use to clean out the sandbox so it would be safe for children to play in?

• Filter
• Screen
• Magnet
• Evaporation

has a definite volume and shape

• Liquid
• Solid
• Gas

If I wanted to separate sand and rocks, what would be the best tool to do so?

• a sifter/screen
• a thermometer
• a coffee filter
• a ruler

The air that you breathe is composed of many different elements that are mixed together but do not dissolve into one another.  That means that air is a...

• mixture
• solution
• solute
• solvent

Which is an example of a solution?

• Chex Mix
• Mixed fruit
• Juice
• milk and cereal

The concentration of a mixture can be increased in which of the following ways?

• Heating the mixture
• Adding more water “solvent”
• Adding more powder “solute”
• Stirring the mixture