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Chemistry voc Review
8th chemistry
| Question | Answer |
|---|---|
| Good conductor of electricity | metals |
| poor conductor of electricity | nonmetals |
| a chart used to group elements | periodic table |
| matter can not be created or destroyed | Law of Conservation of Matter |
| elements chemically combine | compound |
| made of all the same type of atom | element |
| color, size, shape | physical properties |
| a new substance is produced | chemical change |
| transformation of one chemical substance into a product | reactant |
| when 2 reactants go through a chemical reaction that create a... | product |
| can be separated by physical means, the elements are not chemically combined | mixture |
| technique used to separate sugar from water | evaporation |
| as heat energy is added to ice the motion of the molecules | increase |
| atoms of a substance vibrate in place in what phase of matter | solid |
| when a pond freezes the heat energy | decreases |
| In a liquid the space between molecules | increase |
| elements on the far right hand side of the periodic table are | metals |
| sodium and potassium are highly reactive_____ | metals |
| number of protons and neutrons | atomic mass |