| A | B |
|---|
| standard | an exact quantity people agree to use for comparison |
| SI | formerly known as the metric system; based on units of 10s |
| kilogram | SI base unit for mass |
| meter | SI base unit for length |
| second | SI base unit for time |
| Kelvin | SI base unit for temperature |
| mole | amount (quantity) of something |
| 6.02 x 10^23 | the number of "things" in a mole |
| density | amount of mass per unit volume |
| D = m / v | formula for density |
| graph | a visual display of data |
| line graph | type of graph that shows a relationship between two things |
| bar graph | type of graph best used for quantities or things that can be counted |
| circle or pie graph | type of graph that shows how fixed quantities are broken down (percents) |
| mass | the amount of matter in an object |
| volume | the amount of space an object takes up |
| kilo | SI prefix; means 1000 |
| centi | SI prefix; means 1/100 |
| milli | SI prefix; means 1/ 1000 |
| g / mL | unit for density |
