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Forming New Substances Quiz
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1st
2nd
3rd
4th
1. Which of the following statements describes a chemical change?
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A gas is given off when a liquid boils
A solid forms when a liquid freezes
A new substance is formed with different properties
A solid dissolves in a liquid
2. Which of the following is NOT a sign of a chemical reaction?
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gas formation
solid formation
energy change
state change
3. What occurs when water freezes?
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a physical change
a chemical change
a chemical bond
a diatomic molecule
4. What is the force that holds atoms together called?
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1 point
a chemical solution
a chemical mixture
a chemical reaction
a chemical bond
5. What causes chemical bonds in molecules to break?
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when molecules bump into each other with enough energy
when different substances are combined in a solution
when the temperature of a solution is lowered
when a solid dissolves in a liquid
6. How do substances form during a chemical reaction?
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1 point
one or more substances are combined
chemical bonds in molecules add atoms to make more molecules
a solid substance is formed in a solution
chemical bonds break, atoms rearrange, and new chemical bonds are formed
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