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Sief Scs Q4
| Term | Definition |
|---|---|
| atom | the smallest unit of an element that still has the properties of that element |
| proton | a subatomic particle that has a positive charge |
| nucleus | the center of an atom, usually containing protons and neutrons |
| electrons | a subatomic particle that orbits an atom's nucleus, has a negative electric charge, and has very little mass |
| neutrons | a subatomic particle that has the same mass as protons but no electric charge |
| atomic number | the number of protons in an atom |
| element | a substance made up of only one kind of atom |
| metal | a substance that conducts heat and electricity well and that is malleable |
| nonmetal | a substance that does not conduct electricity and is not malleable |
| periodic table | a table that shows the elements arranged by their atomic numbers |
| compound | a substance made up of atoms of two or more elements that are chemically combined |
| melting point | the temperature at which a solid changes from a solid to a liquid |
| boiling point | the temperature at which a substance changes from a liquid to a gas |
| plasma | a state of matter made up of charged atoms, uncharged atoms, and free electrons |
Created by:
mohamedelhussien
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