| A | B |
|---|
| atom | smallest particle of an element that still has the characteristics of the element |
| molecule | two or more atoms bonded together |
| compound | a molecule made of two or more elements |
| carbon dioxide | CO2 |
| Carbon monoxide | Poisonous gas |
| Oxygen | O2 |
| Hydrogen | Flammable |
| Mixture | two or more different molecules not bonded together in a given space |
| Solid | Molecules tightly packed together |
| Liquid | Molecules remain in contact with one another but may flow around one another |
| Gas | Molecules very spread out |
| Fire Triange | Heat Fuel Oxygen |
| Element | A material that can not be broken into smaller parts |
| Water | H2O |
| Hypothesis | Educated guess that can be tested |
| Cobalt Chloride Paper | Tests for moisture |
| Limewater | Tests for CO2 |
| Greenhouse Gas | CO2 |
| Sulfur dioxide | In acid rain |
| Reactant | The chemicals that when joined cause a chemical reaction |
| Product | The chemicals that result from a chemical reaction |
