16587678
Description
| Question | Answer |
| What was the model for Democritus' Atoms? | Atoms are the smallest particles matter is built up from and are responsible for the properties of a material. |
| What was the evidence for Democritus' Atoms? | Democritus noticed that as you cut up a material, its properties remain the same. |
| What was the model for Dalton's Billiard Balls? | Matter is made from indivisible particles known as Atoms. Each atom has an element, and each element is unique. |
| What was the evidence for Dalton's Billiard Balls? | Observed that, when elements react to form compounds, they reacted in a constant ratio depending on the compound (Ie mass of Oxygen (1x16) in water is 8 times the mass of Hydrogen (2x1) |
| What was the model for Thomson's Plum Pudding? | ◘ A spherical cloud of positive charge embedded with small negatively charged particles (e-). ◘ Total charge of atoms is neutral due to electrons and positive cloud cancelling out. |
| What was the evidence for Thomson's Plum Pudding? | When a high voltage passes through a vacuumed tube, cathode rays travel from the to positive electrodes. Any positively charged surface attracts the cathode rays, showing a negative charge is present. |
| What was the model for Rutherfords' Planetary Model? |
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