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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 |