Chapter 2

substance of atoms that can’t be broken down into smaller components

particle with more than one atom

molecule with more than one element

atoms of same element with different number of neutros

sharing electrons

2 ions with opposite charges

hydrogen atoms covalently bonded that are attracted to another atom on another molecule

when one side is more +/-

(carbon-carbon) (carbon-hydrogen)

no carbon or carbon with other elements besides hydrogen

code for genes

translates code

smaller organic molecule - doesn’t mix with water (fat/oil)

animals/plants/fungi/protists

bacteria

ability to do work

rate of which work is done

PE stored in chemical bonds

inputs=outputs

system which exchanges of matter/energy occur across system boundaries

system which exchanges of matter/energy doesn’t occur across system boundaries

energy is not created/destroyed - but can change from one form to another