Unit 3 Test 1 Review

Quiz
•
Science
•
9th Grade
•
Medium
+4
Standards-aligned
Darcy George
Used 74+ times
FREE Resource
26 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which phrase best describes an exothermic chemical reaction?
Does not absorb any energy
Forms products with higher bond energy than reactants
Is in a state of equilibrium
Releases more energy than it absorbs
Tags
NGSS.HS-PS1-4
NGSS.HS-PS3-4
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Identify the products in this reaction: 6H2O + 6CO2 -> C6H12O6 + 6O2
6H2O and 6CO2
6CO2 and C6H12O6
6H2O, C6H12O6, and 6O2
C6H12O6 and 6O2
Tags
NGSS.HS-LS1-5
NGSS.HS-LS2-5
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Chemical reactions that absorb more energy than they release are called
exothermic.
catalyzed.
endothermic.
activated.
Tags
NGSS.HS-PS1-4
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The activation energy needed for a chemical reaction is decreased by a
catalyst.
reactant.
product.
substrate.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In the lock-and-key model of enzyme function pictured, what is happening during the second step?
The catalyzed reaction is releasing a product.
The enzyme is breaking bonds in the substrate.
The enzyme is keeping the bonds the same in the substrate.
The substrate is beginning to bind to the enzyme.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
If the activation energy of a biochemical reaction is lowered, then
the reaction will happen faster.
the reaction will happen more slowly.
this will not affect the rate of the reaction.
both A and B
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The molecule that an enzyme binds to is known as its
substrate.
monomer.
polymer.
complimentary base.
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