| A | B |
|---|
| Matter | anything that has mass and takes up space |
| Mass | the amount of matter in an object |
| Solid | matter that cannot flow and has definite volume |
| Liquid | matter that has definite volume but takes the shape of the container |
| Gas | matter without definite volume or shape but can flow |
| Plasma | matter that is formed at high temperatures when electrons are stripped from neutal atoms |
| Freezing | liiquid to solid |
| Melting | solid to liquid |
| Boiling | liquid to gas |
| Condensation | gas to liquid |
| Pure substance | Made of only 1 type of substance with a constant composition like elements and compounds |
| Mixture | 2 or more pure substances that are not chemically combined |
| Element | simplest kind of matter that cannot be broken down |
| Compound | substances that can be broken down by chemical methods |
| Heterogeneous Mixture | mixture that is not the same from place to place like a chocolate chip cookie |
| Homogeneous Mixture | same composition throughout like air or kool-aid |
| Solution | homogeneous mixture that can occur between any two states of matter |
| Distillation | separates a homogeneous mixture on the basis of difference in boiling point |
| Filtration | separates solid substances from liquids and solutions |
| Qualitative observation | do not involve measurement |
| Quantitative observation | involves measurement |
| control | reacts in a predicatable way |
| variable | factor that we are testing |
| reactant | substance you start with |
| product | stuff that gets made |
| 5 ways to start a chemical reaction | heat, electricity, sound, light, catalyst |
| 6 ways to recognize a chemical reaction is taking place | color change, gas (bubbles), light given off, heat change, sound, precipitate (solid formed) |
