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Matter
| Term | Definition |
|---|---|
| Matter | Anything that has mass |
| Element | A composed substance |
| Periodic table | table of elements |
| atomic number | protons,electrons |
| atomic symbol | name of the element |
| atomic mass | mass of the element |
| compound | substance in 2 elements are chemically joined |
| mixture | two substances are mixed |
| atom | the smallest unit of an element |
| nucleaus | the core of an atom |
| proton | positively charged |
| electron | tiny negatively charge |
| electron shells | fixed orbits or paths |
| molocule | a molecule that contains at least two different elements |
| chemical bond | A chemical bond is an attraction between atoms that allows the formation of chemical substance |
| neutron | small uncharged |