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science asdf
Question | Answer |
---|---|
Law of conservation | matter that cant be created nor destroyed |
physical change | a change in shape size or form |
chemical change | change in matter |
element | substance that cannot be broken down into simpler substances |
chemical formula | formusla showing a chemical change |
element molecule | made up with only elements and have more than one element. |
compound molecule | made up of 2 or more elements in one equation |
chemical equation | shorthand form for writing what reactants are used and what products are formed in a chemical reaction |
chemical reaction | process that produces chemical change resulting in new substances that have properties different from those of the original substances |
reactiant | substance that exists before a chemical reaction begins |
products | substance that forms as a result of a chemical reaction |
subscripts | In word processing and scientific notation, a digit or symbol that appears below the line; for example |
coefficient | A number or symbol multiplied with a variable or an unknown quantity in a scientific equation |