| A | B |
|---|
| All matter is made up of | very small particles |
| There is empty space | between particles |
| Particles are constantly | moving |
| In liquids and gases the particles | collide with each other |
| Particles of a solid can only | vibrate |
| Energy makes particles | move |
| The more energy the particles have | the faster they move |
| Aluminum reacts with acids and | hydrogen gas is released |
| The symbol for Aluminum | Al |
| The symbol for Gold | Au |
| The symbol for Silver | Ag |
| The symbol for Iron | Fe |
| Of any metal tungsten has the highest | melting point |
| Melting point of Mercury | -39 degrees C. |
| Boiling point of Mercury | 357 degrees C. |
| Melting Point of Silver | 962 degrees C. |
| Boiling Point of Silver | 2162 degree C. |
| The nucleus of an atom is | positively charged |
| The number of protons in an atom | is its atomic number |
| John Dalton | 1766-1844 |
| J. J. Thomson | 1856 - 1940 |
| Ernest Rutherford | 1871 - 1937 |
| Ernest Rutherford discovered the nucleus | of an atom with his gold foil experiment |
| Niels Bohr | 1885 - 1962 |
| Subatomic particles | protons, neutrons, electrons |
| Protons and neutrons have much more | mass than electrons |
| Protons and neutrons are made of tiny | particles called quarks |
