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2 cards from this section. Quick, good the night before a test.
What happens to ice when it melts?
Think about what state change occurs.
Is cutting a piece of paper a physical change?
Does the paper remain paper after cutting?
What type of change occurs when ice melts?
Think about whether the material changes its identity.
True or False: Cutting glass creates a new substance.
Does the material retain its properties?
Consider a scenario where a piece of metal is bent. Discuss whether this is a physical or chemical change and why.
Think about whether any new material is formed.
You have saltwater. If you heat it until water evaporates, what kind of change is happening, and what can you recover?
Consider the state of the substances before and after heating.
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