| A | B |
|---|
| element | found on periodic table, cannot be broken down any further |
| compound | composed of two or more elements |
| heterogeneous mixture | can see the different parts |
| homogeneous mixture | looks the same throughout |
| metals | found on the left side of the periodic table |
| alkali metals | group one elements |
| alkali earth metals | group two elements |
| transition metals | group 3-12 elements |
| halogens | group 17 elements |
| noble gases | group 18 elements |
| atomic number | number of protons and electrons |
| physical change | does not change substance EX: melting, freezing, boiling, cutting |
| chemical change | change in substance: burning, reactions |
| density | mass divided by volume |
| solute | what dissolves ex: sugar in iced tea |
| solvent | what does the dissolving ex: water |
| water | universal solvent, is polar |
| acid | ph of 0-7, turns litmus blue red |
| base | ph of 7-14, turns litmus paper blue |
