Intro to Mixtures

What would you use to separate this mixture of different colored marbles?

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You can separate the pebbles from the sand using all of the following EXCEPT--

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If you mixed 125g of sand with 230g of pebbles, what is the mass of the mixture?

• 355g

• 255g

• 230g

• 125g

Why can you use a screen to separate the mixture of beans and water?

• The size of the beans is much bigger than the water.

• The beans are magnetic and will attract to a magnet.

• The size of the water is much bigger than the beans.

• Both the beans and water will go through a screen.

If you did not like tomatoes and wanted to remove them from this pasta salad mixture could they be removed easily and why or why not?

• Yes because the tomatoes keep all their properties and do not change in the mixture.

• Yes because the tomatoes will always sit at the top of the mixture.

• No because the tomatoes will change and be too difficult to remove.

• No because the tomatoes will dissolve in the mixture and you cannot find them.