Atoms, Elements and Compounds AQA GCSE Chemistry
- Created by: Caitlinyx
- Created on: 24-04-13 21:59
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- Atoms, Elements and Compunds
- Atoms
- Everything is made up from atoms
- Atoms are listed in order of atomic numbers on the periodic table
- An atom is made up of a central nucleus and electrons going around it
- Elements
- Each group on the periodic table contains elements with similar properties
- The elements on the periodic table are arranged in collums, called groups
- Elements are one type of atom
- Elements have a symbol that is the same in every language. E.g. Hydrogen - H
- Compunds
- Chemical bonds hold atoms together tightly
- Most substances we see are not elements, they are a mixture of elements called compounds, or molecules
- Did you know? Only 92 elements naturally occur on Earth and the other heavier metals have been made artificially and may have only existed for a few seconds
- Atoms
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