| A | B |
|---|
| matter | anything that takes up space and has mass |
| atom | smallest unit of matter |
| element | made of one type of atom |
| proton | postively charged particles |
| neutron | no charge, inside nucleus |
| electron | negatively charged particle, outside nucleus |
| mass number | proton and neutron together |
| atomic number | number of protons |
| isotope | atoms of same element , with different neutrons |
| molecule | ex. is water. share electrons |
| compound | matter that has properties different from properties of each element |
| chemical property | iron rusts |
| ion | electrically charged atoms |
| mixture | different objects, keeping their own properties |
| solution | one substance is dissolved in another |
| solute | that which is dissolved |
| solvent | that which does the dissolving |
| physical property | blue color |
| density | mass divided by volume |
| nuclear enegy | energy made from atomic reactions |
| fission | splitting of nuclei of atoms |
| nuclear waste | waste from nuclear energy |
