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Emma.Voorhies CHE
Question | Answer |
---|---|
Physical Changes | Alters the form or appearance of a substance without changing the identity of the substance |
Chemical Change | Occurs when substances become new substances with different properties. Chemical bonds are broken and reformed. |
Chemical Bonds | The force that holds atoms together in compounds. Valence electrons (found in groups) |
Chemical Reaction | Process when elements and compounds combine in new ways to form new substances. |