| A | B |
|---|
| matter | takes up space & has weight |
| atom | basic building block of matter |
| compound | more than one different elements joined together |
| molecule | smallest unit of a compound |
| Periodic Table | a tool that organizes elements with common properties |
| atomic symbol | one or 2 letter abbreviation for an element |
| atomic number | the # of protons in the nucleus of an element |
| element | matter matter made up of 1 kind of atom |
| metal | solid at room temperature: shiny, malleable, conductive, ductile |
| non-metal | not shiny, ductile, malleable or conductive |
| chemical change | change from one substance to another substance (ex. rust, burning wood) |
| physical change | a change from one form of a substance to another form fo the same substance (chopping wood, cutting paper) |
| salt | NaCl |
| hydrogen | H |
| gold | Au |
| Ag | Silver |
