Chem Unit 10 Review

Chem Unit 10 Review

9th - 12th Grade

20 Qs

quiz-placeholder

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Chem Unit 10 Review

Chem Unit 10 Review

Assessment

Quiz

Science

9th - 12th Grade

Medium

NGSS
HS-PS1-4, HS-PS1-5, HS-PS3-4

+2

Standards-aligned

Created by

Jonathan Meier

Used 55+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When a catalyst is added to a reaction, a decrease occurs in the

activation energy

heat of reaction

potential energy of the reactants

potential energy of the products

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which statement describes characteristics of an endothermic reaction?

The sign of △H is positive and the products have less potential energy then the reactants

The sign of △H is negative, and the products have less potential energy than the reactants

The sign of △H is positive and the products have more potential energy then the reactants

The sign of △H is positive, and the products have more potential energy than the reactants

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In a chemical reaction, a catalyst changes the

heat of reaction

potential energy of the products

activation energy

potential energy of the reactants

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Given the change of phase: CO₂(g) changes to CO₂(s), the entropy of the system

remains the same

You cannot determine the answer with the given information.

increases

decreases

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which tendencies favor a spontaneous reaction?

decreasing enthalpy and decreasing entropy

increasing enthalpy and increasing entropy

increasing enthalpy, and decreasing entropy

decreasing enthalpy and increasing entropy

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which phrase best describe the following reaction 2H₂ + O₂ --> H₂O + energy?

endothermic, absorbing energy

endothermic, releasing energy

exothermic, releasing energy

exothermic, absorbing energy

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

The change in free energy of a chemical equation is represented by a

△H

△G

△T

△S

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