Welcome to the Quiz!
This quiz contains 8 questions from a mix of 1 subtopics.
What happens to atoms in a chemical reaction?
they are rearranged
they remain unchanged
they are created
they are destroyed
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What happens to the total mass before and after a chemical reaction?
it decreases
it stays the same
it increases
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What happens to the temperature during the reaction between magnesium and copper sulfate?
the temperature fluctuates randomly
the temperature remains constant
heat is absorbed
heat is released
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When atoms rearrange in a chemical reaction, what do they form?
a mixture of old and new substances
no substances at all
the same substances
new substances
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What is conserved during a chemical reaction?
temperature
energy
volume
mass
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A change in temperature during a chemical reaction happens when is taken in or released.
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What word describes a reaction that releases heat?
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List four signs that a chemical reaction has occurred.
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