SCS 1.5 Rates of Reaction WJEC

Front

What is the rate of reaction?

Back

The speed at which a reaction takes place.

Front

Which of the following is NOT a main method to measure the rate of reaction? Measuring the change in mass, Measuring the volume of gas formed, Measuring the formation of a precipitate, Measuring the color of the reactants

Back

Measuring the color of the reactants

Front

According to collision theory, what must happen for a reaction to occur?

Back

Reacting particles must successfully collide.

Front

What is the minimum energy that reacting particles must have for a reaction to take place called?

Back

Activation energy

Front

How does increasing the temperature affect the rate of reaction?

Back

It increases the chance of successful collisions.

Front

What effect does increasing the concentration have on the rate of reaction?

Back

It increases the number of reacting particles.

Front

How does increasing the surface area affect the rate of reaction?

Back

It provides more space for particles to collide, increasing the rate.

Front

What is the role of a catalyst in a chemical reaction?

Back

It speeds up the reaction without being used up.

Front

What does a rate graph show in the context of chemical reactions?

Back

The course of the reaction over time.

Front

If 1g of a catalyst is added to a reaction, how much will be left at the end of the reaction?

Back

1g