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chemical reactions

decomposition Reaction a compound breaks down into simpler substances
activation energy what is needed to start a chemical reaction
arrow yields
characteristics of a chemical reaction changes in energy or changes in properties (produce a gas) (bubbles form) theirs color change
chemical changes alter the chemical properties of matter
chemical equations a shorter and easier way to show chemical reactions
coefficient a number placed in front of a number
conservation of mass the amount of matter involved in a chemical reaction does not change the total mass
endothermic reaction is an observable change in energy
exothermic reaction is an observable change in energy that shows a chemical reaction took place
physical change alter only the physical properties of matter which means no new substances were formed
preipitate a solid that form"s from solution during a chemical reaction
product the materials you have after a chemical reaction
reactants the materials you have after a chemical reaction at the begining
replacement reaction one part of a compound
state of matter solid liquid gas
Created by: 150016117