Mixtures and Solutions

You know that a substance has dissolved when it-

• becomes a solid
• produces condensation and has water droplets 
• spreads evenly throughout a liquid

Tags

NGSS.5-PS1-3

NGSS.5-PS1-4

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

Tags

NGSS.5-PS1-2

Mixtures are combinations of two materials that retain their physical qualities.

• True
• False

Tags

NGSS.5-PS1-2

NGSS.5-PS1-3

NGSS.5-PS1-4

Which of the following is a method of separating solutions?

• hand seperation
• 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

Tags

NGSS.3-PS2-4

Trail mix, with nuts, raisins, pretzels and candy pieces is a good example of a mixture.

• True
• False

Tags

NGSS.5-PS1-4

Which of the following will NOT dissolve in water?

• salt
• rocks
• apple juice

Tags

NGSS.5-PS1-3

Ocean water is a solution?

• True
• False

What happens when sand and water are mixed together?

• sand will settle to the bottom
• water will change physical properties
• the cup will get really cold

Tags

NGSS.5-PS1-4