| A | B |
|---|
| soluble | can be dissolve in another substance |
| condensation | a change of state from a gas to a liquid |
| sublimation | a change in state from a solid to a gas |
| melting point | temperature at which a substance changes from a solid to a liquid |
| freezing point | temperature at which a substance changes from a liquid to a solid |
| heating | adding energy |
| atom | the smallest part of an element that still has the properties of that element |
| molecule | 2 or more ATOMS chemically combined |
| alloy | a solution of 2 metals, or a metal and a nonmetal, that has the properties of a metal |
| solute | the substance that gets dissolved in a solution |
| solvent | the substance that does the dissolving |
| chemical properties | properties that describe how a substance changes into a new substance |
| physical properties | characteristics that can be observed using your senses |
| element | the simplest type of pure substance (found on the periodic table) |
| compound | two or more ELEMENTS chemically combined |
| mixture | 2 or more substances mixed, but not chemically combined |
| electrolysis | when water is broken down into its elements (hydrogen and oxygen) |
| evaporation | when water changes state from a liquid to a gas |
| test for hydrogen | insert lit splint and see if it "pops" |
| test for oxygen | insert glowing splint and see if it relights |
| metals are found on this side of the periodic table | left |
| how are compounds written? | in a formula (metal then nonmetal) |
| heterogeneous mixture | NOT the same throughout (if you take a small sample from 2 different places in it, the samples will differ) |
| homogeneous mixture | very well mixed - the same throughout |
| physical change | a change in the physical properties (ex. shredding a piece of paper) |
| chemical change | a change that gives you a new substance (ex. burning a piece of paper) |
| solution | a very very well mixed mixture (homogeneous) |
| precipitate | an insoluble substance formed from solutions |
