AP Chem 5.5 Quiz

What is required for two molecules to react according to collision theory?

• They must be in the same state of matter.

• They must have enough energy to disrupt existing bonds.

• They must be of the same size.

• They must be in a vacuum.

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NGSS.HS-PS1-5

What is the main focus of collision theory in chemistry?

• The speed of light

• The interaction of molecules

• The color of compounds

• The weight of atoms

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NGSS.HS-PS1-5

According to collision theory, what must reacting particles do for a chemical reaction to occur?

• Absorb light

• Collide with one another

• Change color

• Emit sound

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NGSS.HS-PS1-5

What is the role of activation energy in a chemical reaction?

• It slows down the reaction

• It provides the necessary energy for the reaction to occur

• It changes the color of the reactants

• It emits light during the reaction

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NGSS.HS-PS1-4

Which of the following is a condition for a successful reaction according to the theory?

• High temperature

• Sufficient energy

• Low energy

• No collision

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NGSS.HS-PS1-4

NGSS.HS-PS1-5

What is the likelihood of bond breakage upon collision when temperature increases?

• It decreases.

• It remains the same.

• It greatly increases.

• It becomes impossible.

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NGSS.HS-PS1-5

What does the shaded area under the Maxwell Boltzmann Curve represent?

• Molecules with insufficient energy to react

• Molecules with enough energy to react

• Molecules at equilibrium

• Molecules with zero energy

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NGSS.HS-PS3-2

What is the effect of temperature on the number of collisions according to the Maxwell Boltzmann Curve?

• Temperature has no effect

• Temperature decreases the number of collisions

• Temperature increases the number of collisions

• Temperature stabilizes the number of collisions

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NGSS.HS-PS1-5

Which curve in the diagram above represents the reaction occurring at a higher temperature?

• blue curve

• green curve

• purple curve

Answer explanation

The area under the each curve represents successful collions resulting in the breaking of reactant bonds. The purple has the greatest area under its curve telling us that more successful collisions occur at higher temperatures.

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NGSS.HS-PS1-5

What effect will increasing [H⁺] at constant temperature have on the reaction below? Cl⁻(aq) + ClO⁻(aq) + 2H⁺(aq) → Cl₂(g) + H₂O(l)

• The activation energy of the reaction will increase.

• The activation energy of the reaction will decrease.

• The frequency of collisions between H⁺(aq) ions and ClO⁻(aq) ions will increase.

• The value of the rate constant will increase.

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NGSS.HS-PS1-5