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test 1
test for the first 3 weeks of school
| Term | Definition |
|---|---|
| Element | a pure substance that cannot be separated by chemical or physical means |
| Pure substance | matter that is made from the same particles though out |
| Compound | matter that is composed of two or more elements that are chemically combined |
| Periodic Table of Elements | an arrangement of the elements according to their atomic numbers and periodic trends |
| solid earth | Oxygen and Silicon are the main elements of matter that makes up the earths crust |
| Chemical Symbol | the symbol that represents each element on the periodic table |
| Living matter | the cells of living things that are made of carbon bonded to other elements |
| atmosphere | a mixture of mainly nitrogen and oxygen and small amounts of other gasses that surround Earth |
| matter | anything that has volume and mass |
| oceans | water is made up of the elements hydrogen and oxygen |
| elements of the sytum |