Chemistry: Fundamental Ideas
- Created by: Bexxmay
- Created on: 26-03-14 16:04
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- Fundamental Ideas
- Atoms , Elements and Compounds
- Elements: 100 different types.
- Atoms: elements are made up of one type of atom.
- Compound: formed when two or more elements combine together.
- Atomic Structure
- nucleus at the centre of the atom contains two types of particle:
- Protons
- Neutrons
- Atomic Stucture : of an element is equal to the number of protons in the neutleus of its atom
- Mass Number: total number of particles in the neucleus of an atom.
- MATH SKILLS: number of protons = atomic number. number of electrons= number of protons. number of neurons= mass number -- atomic numberl.
- nucleus at the centre of the atom contains two types of particle:
- Forming bonds
- Alkene : Double bond
- Alkane: Single bond ( 2n + 2)
- Non metals gain electrons to form negativly charged ions.
- Arrangement of electrons in an atom.
- Group 1 : elements that react quickly with water and oxygen.
- Atoms , Elements and Compounds
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