TCA3 Part 3 - Kinetics and Thermodynamics

Heat is measured in 

• joules
• grams
• degrees celcius

How does the addition of a catalyst affect a reaction?

• A catalyst speeds up the reaction by lowering the activation energy barrier.
• A catalyst changes the products formed in the reaction.
• A catalyst has no effect on the reaction rate.
• A catalyst slows down the reaction by increasing the activation energy barrier.

Based on its potential energy diagram, is the reaction endothermic or exothermic?

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

What would be the effect on the particles if more heat is supplied to the system?

• They would slow down
• They would stop moving
• They would speed up
• There would be no effect

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The minimum amount of energy needed for colliding particles to react is called the

• Chemical Energy

• Kinetic Energy

• Activation Energy

• Potential Energy

What type of system is this?

• Open

• Closed

• Isolated

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NGSS.HS-PS3-4

What type of system is this?

• Open

• Closed

• Isolated

Tags

NGSS.HS-PS3-4

_____ reactions usually feel hot!

• endothermic

• exothermic

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NGSS.HS-PS1-4

NGSS.HS-PS3-4

____ reactions usually feel cold.

• endothermic

• exothermic

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NGSS.HS-PS1-4

During an exothermic reaction, heat is _________ and chemical bonds __________.

• released, formed

• absorbed, broken

• released, broken

• absorbed, formed

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4