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9 Cards in this Set
- Front
- Back
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Elements |
A pure substance that cannot be broken down into other substances by chemical or physical means. |
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Neutron |
A small particle in the nucleus of the atom, with no electrical charge. |
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Nucleus |
The central core of an atom containing protons and usually neutrons. |
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Periodic Table of Elements |
A chart of the elements showing the repeating pattern of their properties. |
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Atomic Mass |
The average mass of all the isotopes of an element. |
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Atomic Number |
The number of protons in the nucleus of an atom. |
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Atoms |
The basic particle from which all elements are made. |
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Electron |
A tiny negatively charged particle that moves around the nucleus of an atom. |
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Proton |
A small, positively charged particle in the nucleus of the atom. |
