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10 cards from this deck
Matter changes form but particles remain the same
New substances formed in a chemical reaction
Don't break; compounds rearrange but bonds stay intact
Usually easy to reverse (e.g., filtration, temp change)
Chemical changes have much larger energy changes
Far more difficult to reverse than physical changes
Total mass remains constant
Number of each atom type stays the same
2H2O2\text{H}_2\text{O}2H2O and O2\text{O}_2O2
Always stays the same
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