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Barnett - matter 2

Barnett - 6th grade matter vocabulary part 2

QuestionAnswer
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
Created by: ebarnett
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