| Term | Definition |
| sublimation | transition of a substance from solid-gas or gas to solid with out passing through the intermediate liquid phase |
| deposition | -occurs at a specific tempature and pressure for a specific substance
-requires extra energy |
| element | made up of only one atom |
| compound | made up of more than one atom |
| physical change in matter | changes physically but does not change what it is |
| chemical change in matter | can change chemically by adding/taking away an atom or molecule
-changes what is
-happens when things "decompose" |
| what is matter | -everything around us
-anything made up of atoms or molecules
-has a mass (weight)
-so far 5 forms have been found in the universe |
| what are the 5 states of matter | bose-einstein condensate, solid, liquid, gas, plasma |
| pressure | -a type of energy
higher pressure=more energy
lower pressure=less energy
-changing pressure can change phase of matter |
| solids with higher melting points | steel, rock or plastic |
| if energy increases, matter changes from | solid-liquid or liquid-gas |
| what is 0 degrees Kelvin, Absolute Zero or -273 degrees celcius | when all molecular movement stops |
| dry ice | made by compressing carbon dioxide gas until it liquifies (CO2) |
| temperature | -a type of energy
higher temperature=more energy
lower temperature=less energy
-changing temperature can change phase of matter |
| common elements | He, H, O, C |
| common compounds | H2O, CO2, C6H12O6 |
| liquid | -take the shape of their container
-difficult to compress
-molecules stuck together (cohesion)
-close together |
| gas | -random groups of atoms and molecules
-more spread out
-have lots of energy |
| plasma | -a lot like gas
-when charged with electricity they glow
-not very common |
| solid | -usually hard
-hold their shape/don't move around eachother
-molecules packed tightly together/not alot of space |
| bose-eintein condensate | -only created in 1995
-very low energy
atoms "clump"
-exists at -273 degrees celcius or 0 degrees Kelvin or absolute zero |
| examples of solids | marble, chair, book, computer |
| examples of liquids | honey, juice, maple syrup, water, dish soap |
| examples of gas | water vapour, oxygen, steam, helium, air |
| examples of plasma | -lightning, Northern lights, stars(including sun), tail of a comet, fluorscent lights/neon lights |
