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Erica.olfsonChe
Question | Answer |
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Physical Change | A change that alters the form or appearance of a substance without changing the identity |
Chemical change | A change that occurs when substances become new substances with different properties |
Chemical bonds | The forces that hold atoms together in compounds. They share electrons. Valence electrons are responsible for chemical bonds. |
Chemical reactions | A process in which elements and compounds combine in new ways to form new substances. |