Mixtures and Solutions

The separation technique that involves heating a solution until the liquid changes into a gaseous state, leaving behind a solid is known as

• decanting
•  evaporation
• loading
• chromatography

A _______ does NOT look the same through out. 

• mixture
• solution
• atom
• proton

Which one of the following would you use to separate sand from iron filings?

• a bar magnet
• filter paper
• chromatography paper
• alum

Lemonade is a special mixture called a 

• substance
• solution
• plasma
• ingredient

How would you separate the ingredients of mixture Z?

• Water
• A magnet
• A sieve
• My hands

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

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

Water and Kool-Aid are mixed together. Hot water, coffee and sugar are mixed together. Which substance is the solvent in both?

• Water
• Coffee
• Kool-aid
• Sugar

A combination of two or more substances that cannot easily be separated--

• mixture
• solution
• solute
• solvent

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

• Filter
• Screen
• Magnet
• Evaporation

If I added 27 grams of salt to water and separated the solution with a hot plate, what amount of salt would be left behind?

• 20 grams
• 0 grams
• 27 grams
• 10 grams