| A | B |
|---|
| Element | contains only one type of atom |
| Compound | Two or more types of atom in a set ratio |
| Solution | A well-mixed mixture |
| Mixture | two or more types of atoms, not in a set ratio |
| Physical Change | the physical appearance changes, but the chemistry stays the same |
| Chemical Change | both the chemistry and appearance change |
| Conservation of Mass | the amount of matter before and after a chemical reaction stays the same |
| Heterogeneous Mixture | the Mixture is not the same throughout |
| Homogeneous Mixture | the mixture is the same throughout |
| Color Change | Evidence of chemical reaction, involves different light being absorbed or reflected |
| Precipitation | Evidence of chemical reaction, when two liquids mixed can make a solid |
| Gas Production | Evidence of chemical change, makes lil bubbles |
| Change in temperature | Evidence of chemical change, can be exothermic or endothermic |
| Exothermic reaction | A reaction that gives off heat (gets warmer) |
| Endothermic reaction | A reaction that absorbs heat (gets cooler) |
| Change in properties | Evidence of a chemical reaction, when something changes to become something completely different |
| Density above 1 | Object sinks in water |
| Density below 1 | object floats in water |
| Melting | The change from a solid to liquid |
| Evaporating | the change from liquid to gas |
| Condensation | The change from gas to liquid |
| Freezing | The change from liquid to solid |
| Sublimation | The change from solid to gas |
| Deposition | The change from gas to solid |
