FACTOR THAT AFFECT THE RATE OF REACTION F4 CHEMISTRY RE

What happens when you increase the surface area of a reactant?

• The reaction slows down

• The reaction stops

• The reaction speeds up

• The temperature increases

How does increasing the concentration of a reactant affect the reaction?

• The reaction slows down

• The reaction doesn't change

• Fewer collisions happen

• The reaction speeds up

What is the effect of raising the temperature on the rate of reaction?

• The rate of reaction decreases

• No effect on rate of reaction

• The rate of reaction increases

• The particles move slower

What does a catalyst do?

• It stops the reaction

• It speeds up the reaction

• It makes the reactants disappear

• It increases the temperature of the reaction

Which reacts faster: powder or big chunks?

• Big chunks

• Powder

• Neither

• It depends on the temperature

What happens when you use more concentrated acid in a reaction?

• The reaction becomes slower

• The reaction stops

• The reaction speeds up

• The temperature increases

What effect does increasing temperature have on particle movement?

• Particles move slower

• Particles move faster

• Particles stop moving

• The concentration decreases

Why is a catalyst important in a reaction?

• It makes the reaction stop

• It helps the reaction go faster

• It uses up reactants

• It changes the temperature of the reaction

Does a smaller particle size make a reaction faster or slower?

• Slower

• Faster

• No change

• It depends on the concentration

How does concentration affect the number of collisions?

• Lower concentration increases collisions

• It has no effect on collisions

• Higher concentration increases collisions

• Higher concentration decreases collisions