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Science
Chemistry
| Question | Answer |
|---|---|
| Atom | The smallest unit of matter. |
| What are atoms made of ? | Protons, Neutrons, Electrons. |
| What is the mass of the particles ? | Protons 1, Neutrons 1, Electrons 0. |
| What is the electronic charge of the particles ? | Protons +1, Neutrons 0, Electrons -1. |
| The atoms contain equal number of ..... | Protons, Electrons (so they have no overall charge) and atomic number. |
| How do you recognise the atomic number ? | It is always the smallest of the two. |
| Atomic number | The sum of the protons and neutrons in an atom's nucleus |
| Electron configuration | The arrangement of electrons on the shell. |
| Examples of electro configuration diagrams. | Plum pudding model 1904. Bohr Rutherford ( the one we use ) |
| Isotopes | Are different versions of an element which have different number of neutrons and the same number of protons. |
| Relative Atomic mass | The average mass number of the different isotopes an element. |
| How is RAM calculated ? | (mass number * abundance %) + ( mass number * abundance %) |
| Valence Shell Diagram | Include all the electrons on the outer shell. |
| Relative Formula mass | It is the average of all the masses of atoms in a compound. |
| Element | An element is a substance whose atoms all have the same number of protons |
| Molecule | When two of the same elements combine e.g O2 |
| Compounds | When different elements combine. H2O |
Created by:
Olivia250
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