Mixtures and Solutions

A combination of two or more substances that can be easily separated.

• dissolve
• mixture
• solution
• physical property

One or more substances dissolve in another and cannot be easily separated.

• mixture
• solution
• dissolve
• solute

A science class performed an investigation by evaporating a solution containing 10g of salt and 50ml of water.  How much salt would you expect to find in the cup at the end of the investigation?

• 60g
• 50g
• 10g
• 5g

Tags

NGSS.MS-PS1-2

Which example below describes a simple mixture where the ingredients maintain their physical properties?

• bucket of saltwater and sand
• peanuts, raisins, and chocolate pieces
• sugar and water
• all of the above

You have the following solids in a lab: salt, sand, lemonade powder, and pepper.  Which solids will dissolve in water to create a solution?

• pepper, sand, and salt
• salt, lemonade powder, and sand
• salt and lemonade powder
• pepper and sand

Tags

NGSS.MS-PS1-2

What tool can you use to separate cooked macaroni and boiling water?

• filter
• magnet
• colander
• craft stick

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

• a bar magnet

• filter paper

• hot plate

• strainer

Tags

NGSS.3-PS2-4

Which of the following would be examples of a chemical change? Pick all that apply.

• Baking cookies

• Chopping wood

• Burning wood

• Food spoiling

• Breaking glass

Tags

NGSS.5-PS1-4

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

Tags

NGSS.3-PS2-4

Ocean water is a solution?

• True
• False