Unit 3 Test 1 Review

Unit 3 Test 1 Review

9th Grade

26 Qs

quiz-placeholder

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Unit 3 Test 1 Review

Unit 3 Test 1 Review

Assessment

Quiz

Science

9th Grade

Medium

NGSS
HS-LS1-7, HS-PS1-4, HS-PS1-5

+4

Standards-aligned

Created by

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

Media Image

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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