Which of the following is true about bond formation in a chemical reaction?

It may either absorb or release energy depending on the specific bonds

Which of the following would likely result in an exothermic reaction?

More energy is released in forming bonds than absorbed in breaking bonds

More energy is absorbed in breaking bonds than released in forming bonds

Equal energy is absorbed and released

Based on the information in the graph, choose the statement that best describes the reaction that the graph represents.

The reaction fails to proceed because of insufficient energy.

The reaction fails to proceed because it does not involve an energy change.

Using the diagram, what is an accurate conclusion

a catalyst increased the activation energy

a catalyst decreased the activation energy

What is true of this ENDOTHERMIC reaction?

Overall, reactants have LESS energy than products

MORE energy is absorbed, and LESS energy is released, so the overall change in energy is +96kJ

Overall, reactants have MORE energy than products

LESS energy is absorbed, and MORE energy is released, so the overall change in energy is +96kJ

What is true of this EXOTHERMIC reaction?

Overall, reactants have MORE energy than products

LESS energy is absorbed, and MORE energy is released, so the overall change in energy is -183kJ

Overall, reactants have LESS energy than products

MORE energy is absorbed, and LESS energy is released, so the overall change in energy is -183kJ

What is Activation energy ( Ea)

The amount of energy absorbed when bonds break to start the reaction

The amount of enrrgy released to start a reaction

What is Heat of a Reaction?

It tells us the change in energy of a reaction

It tells us how much energy was absorbed

It tells us how much energy was released

Chemical Reactions and Energy Changes Quiz

Quiz

•

Chemistry

•

10th Grade

•

Practice Problem

•

Medium

•

NGSS

HS-PS1-4, HS-PS3-4, HS-PS3-1

Standards-aligned

Claudia Hernandez

Used 28+ times

FREE Resource

21 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes an EXOTHERMIC reaction?

Overall, Energy is absorbed from the surroundings

Overall, energy is released into the surroundings

No energy change occurs

Overall, Energy is stored in the reactants

Tags

NGSS.HS-PS1-4

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following best describes an ENDOTHERMIC reaction?

Overall, Energy is absorbed from the surroundings

Overall, energy is released into the surroundings

No energy change occurs

Overall, Energy is stored in the reactants

Tags

NGSS.HS-PS1-4

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know if a reaction is exothermic based on bond energies?

More energy is absorbed than released

More energy is released than absorbed

Energy absorbed equals energy released

Energy is neither absorbed nor released

Tags

NGSS.HS-PS1-4

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you know if a reaction is ENDOTHERMIC based on bond energies?

More energy is absorbed than released

More energy is released than absorbed

Energy absorbed equals energy released

Energy is neither absorbed nor released

Tags

NGSS.HS-PS1-4

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What happens to energy when bonds form?

Energy is absorbed

Energy is released

No energy change

Energy is stored

Tags

NGSS.HS-PS1-4

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

When bonds break during a chemical reaction, what happens to energy?

Energy is absorbed

Energy is released

Energy remains constant

Energy is converted to mass

Tags

NGSS.HS-PS1-4

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

In an exothermic reaction, what happens to the energy in relation to the system and surroundings?

Energy is absorbed by the system from the surroundings

Energy is released from the system to the surroundings

Energy remains constant within the system

Energy is converted to matter

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

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Chemical Reactions and Energy Changes Quiz

21 questions

Which of the following best describes an EXOTHERMIC reaction?

Which of the following best describes an ENDOTHERMIC reaction?

How do you know if a reaction is exothermic based on bond energies?

How do you know if a reaction is ENDOTHERMIC based on bond energies?

What happens to energy when bonds form?

When bonds break during a chemical reaction, what happens to energy?

In an exothermic reaction, what happens to the energy in relation to the system and surroundings?

Which of the following is true about bond formation in a chemical reaction?

In the reaction Na₂S + 2HCl → 2NaCl + H₂S, if the overall energy change is +6 kJ, what can we conclude?

In the reaction 2NaCl + H₂S → Na₂S + 2HCl, if the overall energy change is -330 kJ, what can we conclude?

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