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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 |