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chemical equations
uses symbols and chemical formulas to show a chemical reaction occurred
Question | Answer |
---|---|
plus sign | means to combine or and |
arrow | means produces, yields or make points to the product |
chemical equation | uses symbols and chemical formulas to show that a chemical reaction occurred |
reactant | the substances that are broken down (on the left side of arrow) |
products | the new substances made in a chemical reaction (on the right side of arrow) |
Fe+S---> FeS | reactants on the left( Fe and S) |
Fe + S ----> FeS | products on the right (FeS) |
law of conservation of matter ( mass ) | states that matter cannot be created or destroyed |
Coefficient | Tells number of molecules number (in front of formula- 2 FeS) |
subscript | Tells number of atoms ( small number written below and after) |