| A | B |
|---|
| scientific method steps | observation, hypothesize, expirementing, conclusion, natural law, theory |
| law | explains how things behave; usually in a predictable way |
| theory | explains why things behave as they do |
| mega | million |
| kilo | thousand |
| deci | tenth |
| centi | hundreth |
| milli | thousandth |
| micro | millionth |
| nano | billionth |
| pico | trillionth |
| energy | the capacity to do work |
| kinetic energy | energy of motion |
| potential energy | stored energy |
| law of conservation of energy | energy is neither creadted nor destroyed |
| solid | high density; density lil effected by pressure; holds itw own shape in container |
| liquid | high density; lil affected by pressure; adopts chape of its container |
| gas | expands to fill its container; depends on density |
| plasma | low density; depends on pressure; expands to fill container; exists only in high temps |
| filtration | sperates heterogeneos mixtures composed of liquids and solids- mix. is poured through a piece of paper which lets the liquid parts pass through but catrches the solids |
| disilation | seperates homogeneous mixtures-uses boiling points; w/2 liquids w/the lower boilling point boils and becomes a gas |
| crystallization | produces solids of very high purity |
| chromatography | solution is seperated by allowing it to flow along a stationary substance |
| cathode ray | stream of electrons emitted by a neg. charged electrode and attracted by a pos. charged electrode |
| radioactivity | spontaneous emittion of radiation from an element |
| atomic # | the # of protons in an atom |
| amplitude | height of the wave measured from the origin to its peak or crest |
| wavelength | the distance b/t successive crests of the wave |
| low frequency | long wave length |
| high frequency | short wave length |
