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chemical reactions
Question | Answer |
---|---|
chemical equation | a way to show a chemical reaction, using symbols instead of words. |
law of conversation of mass | states that during a chemical reaction, matter is not created or destroyed |
open system | matter can enter from or escape to the surroundings |
closed system | matter does not enter or leave (that occurs inside) |
coefficient | a number placed in front of a chemical formula in an equation |
synthesis | two or more elements or compounds combine to make a more complex substance |
decompisition | reaction occurs when compounds break down into simpler products |
replacement | when one element replaces another element in a compound , or if two elements in different compounds trade places |