potential energy diagrams

potential energy diagrams

10 Qs

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potential energy diagrams

potential energy diagrams

Assessment

Quiz

Chemistry

Practice Problem

Hard

Created by

B Jacob

Used 3+ times

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

In an exothermic reaction, heat is ...

Released

Absorbed

Synthsized

Decomposed

2.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The value of ΔH for an exothermic reaction is always...

Positive

Either positive or negative

Negative

0

3.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

The chemical reaction 2H2O --> 2H2 +O2 shows what process?

Bond Making

Bond Breaking

Bond Forming

Bond Togetherness

4.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

You are in the lab reacting calcium chloride and water. You experience an exothermic reaction as heat is being released from the system. Which potential energy diagram best illustrates this exothermic reaction?

A

B

5.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Which of the following is true about endothermic reactions?

Heat is released

The reaction feels warm/hot

Heat is absorbed

6.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

You are in the lab and you react ammonium nitrate and water. Your observe that the reaction is cold. Which best describes the type of reaction between ammonium nitrate and water?

Exothermic Reaction

Combustion Reaction

Unidentifiable Reaction

Endothermic Reaction

7.

MULTIPLE CHOICE QUESTION

2 mins • 1 pt

Media Image

Based on the following Energy Diagram, which statement best describes this image?

The reaction is endothermic because the heat energy of the reactants is less the energy in the products. This means heat is absorbed in the reaction.

The reaction is endothermic because the heat energy of the reactants is greater the energy in the products. This means heat is released in the reaction.

The reaction is exothermic because the heat energy of the reactants is less the energy in the products. This means heat is absorbed in the reaction.

The reaction is exothermic because the heat energy of the reactants is greater the energy in the products. This means heat is released in the reaction.

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