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Barnett - matter 2
Barnett - 6th grade matter vocabulary part 2
Question | Answer |
---|---|
synthesis | reaction where two or more substances (elements or compounds) combine to make a more complex substance |
decomposition | reaction where substances are broken down into simpler products |
replacement | when one element replaces another in a compound, or when two elements in different compounds trade places |
precipitate | a solid that forms from solution during a chemical reaction |
endothermic reaction | a reaction that absorbs energy in the form of heat (takes energy IN) |
exothermic reaction | a reaction that releases energy in the form of heat (lets energy OUT) |
physical property | a characteristic of a substance that can be observed without changing it into something else |
chemical property | a characteristic that is observed when a substance interacts with another substance |
physical change | a change that alters teh form or appearance of a material but does not make the material into another substance |
chemical change | a change in matter that produces a new substance |
weight | a measure of the force of gravity on an object |
mass | the amount of matter in an object |
international system of units | (SI) system that scientists use to measure |
volume | the amount of space that matter occupies |
density | the amount of mass in a given space |