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10 Cards in this Set
- Front
- Back
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Atoms |
Basic building blocks of all materials |
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Elements |
Made up of one type of atom Hydrogen and carbon |
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Molecules |
2 or more atoms joined together chemically |
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Compound |
When a molecule is made up for 2 or more different atoms - h2O -CO2 |
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Structure of atoms |
An atom is made of 3 sub atomic particles |
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3 sub atomic particles |
- protons - positive - neutrons - neutral - electrons - negative |
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Atomic number |
Number of protons in the nucleus of an atom |
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Mass number |
Number of protons and neutrons in the nucleus of an atom |
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Electron configuration |
Niels Bohr creates bohr diagrams |
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Bohr diagrams |
Electron shells containing electrons orbiting the nucleus |
