| How close are the atoms in a solid state? | They are touching each other with their movenment being restricted to vibration. |
| How close are the atoms in a liquid state? | They are close and just slid on top of each other but can move more freely than the solid. |
| How close are the atoms in a gas state? | They are far away from one and each other can move anywhere they want. |
| What is a chemical change? | Its when the particles rearrange to become something new. This also can change the formula. eg Water breaking down to Hydrogen and Oxygen. |
| What is a physical change? | This is when the substance changes state with no affect to its formula. eg Melting Bromine. |
| How [roughly] big is an atom? | 10 [x10 to the power of -10] |
| What is an element? | An element is made of 1 type of atom and is also pure. |
| What does pure mean? | Pure means made of 1 element/compound and not mixed together. |
| What is a solute? | A solute is when a substance has been dissolved in a solution |
| What is a solvent? | A solvent is the substance that dissolves the solute. |
| What is a solution? | A solution is when a solvent and solution exist in one. eg salt water. Salt is a the solute while water is the solvent. |
