Mixtures and Solutions

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

• a mixture

• a solution

• a solute

• a solvent

2.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

3.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.MS-PS1-4

Which of the following is a method of separating solutions?

• hand seperation

• filtering

• screening

• evaporation

To separate a mixture of sugar 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?

• Evaporation

• Filter

• Screen

• Magnet

If you wanted to separate salt from a lot of water, what do you think would be the best way to do it?

• Boil the water so that only the salt remains

• add food dye to the solution so you can see where the water is

• Use a magnet to get the salt out

• Use a sifter or coffee filter to filter it out

Which term best describes the ability of a substance to be dissolved into another?

• saturated

• concentrated

• diluted

• solubility

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

• a thermometer

• a screen

• a coffee filter

• a ruler

Salad is a mixture because

• the ingredients form a pure substance

• the ingredients are not chemically combined

• the ingredients can easily be separated

• the ingredients go well together