level: Atomic Model
Questions and Answers List
Who found out what?
level questions: Atomic Model
| Question | Answer |
|---|---|
| What was Democritus known for? | Known for finding out particles |
| What was John Dalton known for? | Known for finding out that elements are made by atoms. |
| What was J.J Thomson known for? | Known for finding out electrons |
| What was Ernst Rutherford known for? | Known for finding out the nucleus |
| What was Niels Bohr known for? | Known for electron energy levels. |
| What was James Chadwick known for? | Known for finding out the neutrons |
| Size of an Atoms? | 1-10 x 10 to the power of -10 |
| -What does the Nucleus contain? -What charge to they give? -What is the Size of a Nucleus? -Mass of Nucleus | -Nucleus has Protons and Neutrons. -They give out an overall Positive Charge -Its very small, 1x10 to the power of -15 -Its around 1x10 to the power of 23 [This hinges on the Element] |
| Atoms joining together creates what? Difference of Size? | Molecules. Their size is Bigger than a Atom, by such a tiny amount that saying its the Size of an Atom is good Enough |
| What is the Relative Mass of Electron? | -Its very small: 0.0005 grams |