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