- Identify physical and chemical changes, and understand the differences between them.
Physical changes produce no new substances- the substance undergoing change may have a different shape or state but is the same substance at the end. Physical changes are concerned with change in states of matter. Examples: boiling water, melting ice, breaking a bottle, crumbling paper.
Chemical changes produce a new substance and either absorbs or releases heat during the process. Chemical changes happen on an atomic level. Examples: burning wood, dissolving salt in water, digesting food.
Notes submitted by Lintha
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