which material is a pure substance?
a) alloy
b) compound
c) mixture
d)...
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650.j is the same amount of energy as? 2720cal1550cal650.cal2.72cal
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How is energy related to the change of state represented by the model? atoms gain energy as a solid changes to a liquid. atoms gain energy as a solid changes to a gas. atoms lose energy as a solid changes to a liquid. atoms lose energy as a solid changes to a gas.
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