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Wednesday, March 5, 2014

Scientists use Physical properties

Can you think of other mixtures? Macaroni and cheese is a mixture. The sand, pebbles,and shells on the beach from a mixture. You can separate the sand,pebbles,and shells. The substance of a mixture can be separated using physical methods.
 Scientists use physical properties such as the boiling point to separate mixtures. Suppose you have a mixture two liquids with different boiling points. If you raise the temprature of the mixture to the lower to the two boiling points, one substance will chnge to gas while the other remains a liquid.
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