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science10/1
chemistry
Question | Answer |
---|---|
law of conservation of mass | the mass of the of the products of a chemical reaction must bee the same as the mass of the reactant. |
phiscal change | phiscal changes in a substance affect only phisical properties. |
chemical change | resulting in new substance that have properties different from those of the original substances. |
element | substance that can not be broken down into simpler substances. |
chemical formula | short hand form for writing what reactants are used and what products are formed in a chemical reaction |
element molecule | 2 or more elements together |
compound molecule | same amount of molecules together |
chemical equation | short hand form for writing what reactannts are used and what products are formed in a chemical reaction. |
chemical reaction | process that produces chemical change resulting in new substance that have different properties different from those of the original substancses |
reactants | substanse that exist befor a chemical reaction begins. |
products | substance that forms as a result of a chemical reaction. |
coefficient | a number of substances that is constant for a given body |
subsript | written below |