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chemical reaction
my science study cards
Term | Definition |
---|---|
Activation energy | what is needed to start a chemical reaction |
Arrows | you read the arrow as "yields" in a chemical equation or formula |
characteristics of a chemical reaction | changes in energy or changes in properties |
chemical changes | alter the chemical properties of matter |
chemical equiations | a shorter easier way to show chemical reaction |
coefficient | a number placed front of a chemical formula |
conservation of mass | the amount of matter involved in a chemical reaction |
decompostion reaction | a compound breaks down into simpler substances |
endothermic reaction | an observable change in energy that shows a chemical reaction |
exothermic reaction | an observable change in energy that shows a chemical reaction |
physical changes | alter only the physical properties of matter no new substances are formed |
precipitate | a solid that forms from a solution during a chemical |
products | the materials you have after a chemical reaction |
reactants | the material you have at the beginning |
repalcement reaction | one part of a compound is displaced by an element or a compound from another substance |
states of matter | solid liquid gas |
subscripts | show the number of atoms |
synthesis reaction | two substances combine to form a new compound |