| A | B |
| matter | anything that has mass and takes up space |
| qualitative observations | facts obtained using tools and measurements |
| quantitative observations | facts obtained using tools and measurements |
| mass | amount of matter an object has |
| balance | a tool for measuring mass |
| kilogram (kg) | the standard unit for mass; used for measuring large objects |
| gram (g) | a unit for mass; used for measuring smaller objects |
| milligram (mg) | a unit of mass; used for measuring very tiny objects |
| volume | the amount of space an object takes up |
| liter (L) | the standard unit for volume; used for measuring large objects |
| milliliter (ml) | a unit for volume; for measuring smaller objects |
| cm3 | a unit for volume; measuring square or rectangle objects; from length x width x height; also a unit volume for solids |
| meniscus | bubble formed on top of liquids in graduated cylinders; always read from its bottom |
| graduated cylinder | cylinder shaped container; tool for measuring volume very accurately |
| beaker | a barrel shaped container; tool used for measuring volume |
| flask | a triangular shaped container; tool for measuring volume |