front 1 changes in matter | back 1 matter can undergo two types of changes (1) physical- physical only (chewing steak is a physical change) (2) chemical- changed (digestion) |
front 2 four elements that make up 96% of the body | back 2 carbon hydrogen oxygen nitrogen |
front 3 proteins are positive | back 3 ions- elements that carry on electrol charge cation- positively charged ion anion- negatively charged ion |
front 4 water functions | back 4
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front 5 catalyst a chemical substance | back 5 the rate of the reaction needs to be increased also a chemical used to increase the spread of a chemical reaction |
front 6 body ph | back 6 7.35 to 7.45 slightly alkaline |
front 7 ATP | back 7 An energy transfer molecule |
front 8 Cell structure | back 8 structural and functional unit of all living matter |