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7 questions
What are the three states of matter?
Which of the states holds their shape and has tightly packed atoms and molecules?
Solids
Gases
Liquids
True or false: In gases, the atoms and molecules are spread far apart
True
False
For a change of state to occur, energy has to be:
Added
Removed
Either
During the process of freezing, what is happening to a liquid?
Heat energy is being added
Heat energy is being removed
Is melting a reversible change?
Yes
No
Which of the following is an IRREVERSIBLE change?
Freezing
Burning
Condensing
Evaporating
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