How could you separate sand and salt?

• use a magnet

• filter the sand out of salt

• mix with water, catch salt that floats to the top

• mix with water, filter the sand, evaporate water

What's easier to separate, a mixture or a solution?

• mixture

• solution

A student makes a mixture using water and 10 g of sand. How much sand will remain after 4 days of evaporating water from the cup?

• 10 g

• 9 g

• 0 g

What's the only way to remove a dissolved substance from a liquid?

• magnets

• filtering

• evaporation

A student mixes salt, water, pebbles, and iron in a pan and sets it on the stove for evaporation to happen. What will evaporate?

• salt only

• water only

• water and salt

Tags

NGSS.MS-PS1-4

Why is a fruit salad easy to separate?

• the fruit all changes color

• all the parts are solids so you can pick them apart easily

• the fruit dissolves in water

Which of the following are solutions?

• oil and vinegar

• oil and water

• sugar and water

Are solutions easy to separate?

• no

• yes

Which of the following maintains the physical properties of its ingredients?

• solution

• mixture

All of the following are mixtures EXCEPT...

• a bag of apples

• a can of peas and carrots

• a box of trail mix

• a basket of ribbon and buttons