Atoms and elements
- Created by: Aliah123
- Created on: 25-01-16 20:53
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- Atoms elements
- Atoms have a small nucleaus surrounded by electrons
- The nucleus Is in the middle of an atom. It contains protons and neutrons. Protons are positively charged. Neutrons have no charge.
- When two or more atoms join together a molecule is formed.
- There are 92 elements found naturally on earth.
- Each element contains only 1 type of particle, called an atom.
- Keywords solvent- A liquid that things dissolve in Solute - the thing that dissolves Solute + Solvent - solution Saturated solution - holds maximum amount of solute
- Different atoms can bond together by giving, taking or sharing electrons, to form compounds
- The nucleus Is in the middle of an atom. It contains protons and neutrons. Protons are positively charged. Neutrons have no charge.
- The electrons move around the nucleus they are negatively charged
- Electron shell the lowest energy levels are always filled up first these are the ones closest to the nucleus 1st shell - 2 2nd shell - 8 3rd shell - 8
- An element is a pure substance that cannot be split up into simpler substances
- Atoms have a small nucleaus surrounded by electrons
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