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Chemical Reactions

When one element replaces another element in a compound
A material used to decrease the rate of a chemical reaction
A change in matter that produces a new substance
Increases the reaction rate by lowering the activation energy
More energy is required to break the bonds of the reactants
A solid that forms from liquids during a chemical reaction
A reaction that occurs when compounds break down into simpler products
Substances that undergo the chemical change
Any change that alters the appearance of a substance but does not change it into a new substance
A number placed in front of a chemical formula in an equation
The energy released as the products form is greater than the energy required to break the bonds of the reactants
The amount of a substance in a given volume
Two or more elements or compounds combine to make a more complex substance
The new substance that forms from a chemical reaction
Matter can enter from or escape to the surroundings