NSCAS Science Review

Which tool would BEST separate sand and clay mixed in soil?

• sifter

• ruler

• thermometer

• magnet

Which mixture can be easily separated by adding water and pouring it through a coffee filter?

• sugar and salt

• salt and sand

• sugar and baking soda

• iron filings and sand

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Vinegar and water are placed in a container and stirred. What is formed when they are mixed?

• gas

• solid

• solution

• compound

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Which item is a mixture?

• gold

• iced tea

• oxygen

• water

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Which one is a pure substance?

• air

• gold

• salt

• water

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What is an example of a pure substance?

• cement

• diamond

• fruit salad

• potting soil

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Which example is a mixture?

• aluminum

• brass

• gold

• oxygen

Tags

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Walter is investigating some properties of concrete. He pours a sample of dry concrete onto the ground. Walter observes that the concrete is made up of sand, pebbles, and bigger pieces of rocks.

Which term BEST describes the dry concrete?

• compound

• element

• mixture

• solution

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Which example is a mixture?

• air

• oxygen

• salt

• water

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What is NOT a mixture?

• iron filings

• fruit salad

• ocean water

• rocks and sand

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