Chemical Changes in Matter
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Last updated over 4 years ago
10 questions
1
When liquids such as water or vinegar evaporate, they release a gas called _________________.
When liquids such as water or vinegar evaporate, they release a gas called _________________.
1
The green substance that sometimes forms on the surface of a penny is called _______________.
The green substance that sometimes forms on the surface of a penny is called _______________.
1
People can rub silver polish on their silverware so that it will not turn black or ________________.
People can rub silver polish on their silverware so that it will not turn black or ________________.
1
When iron is exposed to air and moisture, a reddish substance called ___________begins to form,
When iron is exposed to air and moisture, a reddish substance called ___________begins to form,
1
When one kind of matter is changed into a different kind of matter, that is a __________________.
When one kind of matter is changed into a different kind of matter, that is a __________________.
1
Chemical changes always involve_______________.
Chemical changes always involve_______________.
1
Some chemical changes can be harmful.
Some chemical changes can be harmful.
1
Some chemical changes can be helpful.
Some chemical changes can be helpful.
1
Describe what happens when sodium and chlorine combine?
Describe what happens when sodium and chlorine combine?
1
How is a chemical change different from a physical change?
How is a chemical change different from a physical change?