What is the primary purpose of an energy diagram in chemistry?

Exothermic Reactions and Energy Diagrams

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Chemistry
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9th - 10th Grade
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Hard

Patricia Brown
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10 questions
Show all answers
1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
To visually represent the energy changes in a reaction
To calculate the exact amount of energy in a reaction
To identify the reactants and products in a reaction
To determine the speed of a chemical reaction
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following indicates an exothermic reaction on an energy diagram?
The potential energy of the products is higher than the reactants
The potential energy of the reactants is higher than the products
The activation energy is zero
The diagram shows a flat line
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In an exothermic reaction, what happens to the heat?
It is released into the surroundings
It is absorbed by the system
It remains constant
It is converted into light
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the significance of the activation energy in a chemical reaction?
It is the energy absorbed by the products
It is the energy released during the reaction
It is the energy required to start a reaction
It determines the speed of the reaction
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which side of a chemical equation would you find heat in an exothermic reaction?
On the reactant side
On the product side
Heat is not shown in the equation
In the middle of the equation
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does a positive Delta H value indicate in a chemical reaction?
The reaction is exothermic
The reaction is endothermic
The reaction is at equilibrium
The reaction is spontaneous
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What does an uphill curve on an energy diagram indicate?
An exothermic reaction
An endothermic reaction
A reaction at equilibrium
A spontaneous reaction
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