Question 1

Which factor can increase the rate of a chemical reaction?

Accepted Answer

Increasing the temperature

Answer

Decreasing the concentration

Answer

Lowering the pressure

Answer

Using larger particle sizes

Question 2

What effect does increasing the surface area of a reactant have on the reaction rate?

Accepted Answer

It increases the reaction rate

Answer

It makes the reaction go in reverse

Answer

It has no effect on the reaction rate

Answer

It decreases the reaction rate

Question 3

How does increasing the concentration of reactants affect the reaction rate?

Accepted Answer

It increases the reaction rate

Answer

It has no effect on the reaction rate

Answer

It decreases the reaction rate

Answer

It reverses the reaction

Question 4

Which of the following catalysts affects the rate of a chemical reaction?

Accepted Answer

Adding a substance that lowers the activation energy

Answer

Removing energy from the reactants

Answer

Diluting the solution with water

Answer

Increasing the pressure on the reaction

Question 5

What happens to the reaction rate when a reaction reaches equilibrium?

Accepted Answer

The reaction rate becomes constant

Answer

The reaction rate decreases to zero

Answer

The reaction stops completely

Answer

The reactants are used up completely

Question 6

What is the effect of adding a catalyst to a reaction?

Accepted Answer

It speeds up the reaction without being consumed

Answer

It slows down the reaction

Answer

It changes the reaction's properties

Answer

It becomes part of the reaction product

Question 7

How does temperature affect the kinetic energy of molecules in a reaction?

Accepted Answer

Higher temperature increases kinetic energy

Answer

Temperature has no effect on kinetic energy

Answer

Higher temperature decreases kinetic energy

Answer

Lower temperature increases kinetic energy

Question 8

What effect does increasing pressure have on the reaction rate of gases?

Accepted Answer

It increases the reaction rate

Answer

It has no effect on the reaction rate

Answer

It makes the reaction go backwards

Answer

It decreases the reaction rate

Question 9

Which of the following factors does NOT typically affect the reaction rate?

Accepted Answer

The color of the reactants

Answer

Concentration

Answer

Temperature

Answer

Surface area

Question 10

What effect does stirring a solution have on the reaction rate?

Accepted Answer

It increases the reaction rate

Answer

It decreases the reaction rate

Answer

It stops the reaction completely

Answer

It has no effect on the reaction rate

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