| A | B |
|---|
| atom | smallest particle of an element |
| compound | a type of matter containing 2 or more elements |
| density | how highly packed a substance molecule is |
| element | a form of matter that contains only one kind of atom |
| fission | the splitting of atoms of atoms of heavy elemants to realease energy |
| isotopes | atoms of the same element that have differnt numbers of neutrons with the same number of protons |
| mixture | a combanation of differnt substances that keep there own chemical poerties |
| ion | an atom with an electrical charge. |
| molecule | the smallest particle of a compound |
| matter | anything that takes up space and has matter |
| proton | one of the 2 things in a nucleus, positive charge |
| neutron | one of the2 thigns in the nucleus, no charge |
| electon | one of the three thing in an atom, negative charge |
| mass number | the sum of the number of protons and neutrons. |
| atomic number | equals the number of electrons in a atom. p+e |
| chemical properties | charicteristic of an element or compound that determines how it will react with other elements or compounds |
| physical properties | charicteristics of an element or compound that effect color, weight,ect. |
