Mixtures

You know that a substance has dissolved when it-

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

Which of the following is a method of separating solutions?

• hand seperation
• filtering
• screening
• 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

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

• True
• False

Which of the following will NOT dissolve in water?

• salt
• rocks
• apple juice

Ocean water is a solution?

• True
• False

Tags

NGSS.MS-ESS2-4

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.MS-PS1-2

What are mixtures?

• different materials placed together but keeping their own properties

• a mixture in which substances spread out evenly and will not settle

• the degree to which a material will dissolve in another substance

• the substance in a solution that has the greatest amount

• the substance in a solution that has the least amount

What is solubility?

• different materials placed together but keeping their own properties

• a mixture in which substances spread out evenly and will not settle

• the degree to which a material will dissolve in another substance

• the substance in a solution that has the greatest amount

• the substance in a solution that has the least amount

What is a solvent?

• different materials placed together but keeping their own properties

• a mixture in which substances spread out evenly and will not settle

• the degree to which a material will dissolve in another substance

• the substance in a solution that has the greatest amount

• the substance in a solution that has the least amount