Boiling water is which king of change? Physical or chemical?
Physical change
Matter can change in ways that do not affect the type of matter. What are these changes called?
Physical changes
True or false: When you sharpen a pencil, the pencil goes through a chemical change.
False
When water freezes, does it expand or contracts in size?
It expands
List 2 examples of chemical change.
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True or false: The total mass of the water and sugar separately and combined is the same.
True
What happens to most matter when the temperature goes up?
They expand
True or false: During physical and chemical change, the total mass of the matter before and after the change remains the same.
True
Dissolving sugar in water is which king of change? Physical or chemical?
Physical
True or false: A chemical reaction is the process in which new substances are formed.
True
list 2 examples of physical change.
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Cooking an egg is which king of change? Physical or chemical?
Chemical change
How quickly a change occurs is called?
The rate of change