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Worksheets2.3 Practice Quizizz
Total questions: 10
Worksheet time: 9mins
Name
Class
Date
1.
What kind of reaction is shown in the picture
a)
Endothermic
b)
Exothermic
c)
Explosive
d)
Boring
2.
_________________ are the elements and compounds that enter into a chemical reaction.
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
3.
The energy needed to start a chemical reaction is the _____________________.
a)
Activation Energy
b)
Products
c)
Reactants
d)
Enzymes
4.
_______________ can speed up the rate of reactions and/or lower the amount of energy needed for
the reaction to take place.
the reaction to take place.
a)
Carbohydrates
b)
Fuel source
c)
Chemical
d)
Catalyst
5.
Enzymes are _____________________.
a)
Carbohydrates
b)
Lipids
c)
Proteins
d)
Nucleic Acids
6.
Enzymes work by lowering the _______________________ for chemical reactions.
a)
Products
b)
Solutes
c)
Activation Energy
d)
Reactants
7.
___________________ are the elements are compounds that leave (are formed in) a chemical
reaction.
reaction.
a)
Polymers
b)
Bonds
c)
Reactants
d)
Products
8.
Chemical reactions that release energy are known as ________________________.
a)
Endothermic
b)
Exothermic
c)
Boring
d)
Reactions
9.
Chemical reactions that absorb energy are known as ________________________.
a)
Endothermic
b)
Exothermic
c)
Boring
d)
Explosive
10.
In the formula: C + O2 CO2, CO2 is the ____________________.
a)
Products
b)
Solution
c)
Answer
d)
Reactants
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