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S8P1.a
Distinguish between atoms and molecules
| Question | Answer |
|---|---|
| atom: | the smallest unit of an element that maintains the properties of that element. |
| element: | a substance that cannot be separated or broken down into simpler substances by chemical means. |
| nucleus: | in physical science, an atoms central region, which is made up of protons and neutrons. |
| proton: | a subatomic particle that has a positive charge and that is found in the nucleus of an atom. |
| neutron: | a subatomic particle that has no charge and that is found in the nucleus of an atom. |
| electron: | a subatomic particle that has a negative charge. |
| Atomic number: | the number of protons in the nucleus of an atom; the atomic number is the same for all atoms of an element. |
| Neutral: | having no overall charge |
| Atomic mass: | the mass of an atom expressed in atomic mass units. |
| Chemical symbol: | a one or two letter code that represents an element. |
Created by:
65SteKin
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