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Matter
| Term | Definition |
|---|---|
| Atom | the base particle from which all elements are made; the smallest particle of an element that has the properties of that element |
| Nucleus | the central core of an atom which contains protons and neutrons |
| Electron | a tiny, negatively charged particle that moves around the outside of the nucleus of an atom |
| Neutron | small particle in the nucleus of the atom, with no electrical charge |
| Proton | small, positively charged particle that is found in the nucleus of an atom |
| Element | a pure substance that cannot be broken down into other substances by chemical or physical means |
| Electron Cloud | where electrons are when they go around the nucleus of an atom |
| Atomic number | the number of protons in the nucleus of an atom |
| Mass number | the sum of protons and neutrons in the nucleus of an atom |
| Isotope | an atom with the same number of protons and a different number of neutrons from other atoms of the same element |
| Periodic table | the arrangement of elements showing the repeating pattern of their properties |
| Matter | anything that has mass and takes up space |
| Chemical Property | characteristic of a substance that describes its ability to change into different substances |
| Atom | basic particle from which all elements are made; the smallest particle of an element that has the properties of that element |
| Chemical Change | change in which one or more substances combine or break apart to form new substances |
| Element | pure substance that cannot be broken down into other substances by chemical or physical means |
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