Chemical Reactions
Chemical Reactions II
Rates of Chemical React.
Testing Concepts
Misc.
100
Speeds up a reaction.
What is catalyst?
100
A substance formed by a chemical reaction.
What is a product?
100
A change in state is a _________ change.
What is physical?
100
Heat is absorbed during ___________ reactions.
What is endothermic?
100
Chemical reactions usually speed up at ________ temperatures.
What is higher?
200
A reaction that realeases heat.
What is exothermic reaction?
200
A substance that exists before a reaction begins.
What is a reactant?
200
_________ speed chemical reactions but are not changed by them.
What is Catalysts?
200
A ________ is a process in which new substances are formed.
What is a chemical reaction?
200
Reactants have their highest concentrations _______ a chemical change takes place.
What is before?
300
Slows down a reaction.
What is inhibitor?
300
It is how fast a reaction occurs.
What is rate of reaction?
300
Heat, light, or change in odor can indicate a _______ change.
What is chemical?
300
The melting of ice is an example of a(n) _______ .
What is physical change?
300
A higher concentration of reactant will speed up a chemical reaction because there will be more _______ between the reactant particles.
What is collisions?
400
A reaction that absorbs heat.
What is endothermic reaction?
400
The minimum amount of energy needed to start any chemical reaction.
What is activation energy?
400
Cold usually ______ ______ reaction rates.
What is slows down?
400
For a chemical reaction to begin ________ is needed.
What is activation energy?
400
Catalysts _______ the activation energy needed to start a chemical reaction.
What is reduce?
500
A process that produces a chemical change.
What is chemical reaction?
500
Chemical reactions occur faster if the reactant is _______.
What is smaller?
500
A ______ concentration of a chemical slows reaction rate.
What is low?
500
Adding an inhibitor tends to _________ a reaction.
What is slow down?
500
To check that an equation is balanced, count the number of _______ on each side of the equation.
What is atoms of each type?
M
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