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SCI CH 9 L 3

QuestionAnswer
chemical change a change in matter that produces a new substance with different properties from the original.
compound a chemical combination of 2 or more elements
chemical bond a link that atoms or atomic sized particles can form with each other.
chemical formula a way of using letters and numbers to show how much of each element is in a substance
ion an electrically charged particle with unequal numbers of protons and electrons
chemical property a way of describing a substance by how it reacts chemically to other substances
molecule a group of tightly bonded atoms that acts like a single particle
exothermic a reaction that gives off heat
endothermic a reaction that absorbs heat
Created by: Kerzetski
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