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4 Cards in this Set
- Front
- Back
What is an element? |
An element is a substance made of only one sort of atom. |
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What do the groups in the periodic table show? |
Elements with similar properties. |
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What are the relative charges of the sub-atomic particles? |
Proton = +1 Electron = -1 Neutron = 0 |
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In an atom which two sub-atomic are equal in number? |
The number of protons are equal to the number of electrons. |