How Fast/chemistry

Question 1

How does concentration affect a solution

Answer 1

Increasing concentration
increases number of collisions and increases rate

Question 2

How does temperature affect a solution?

Answer 2

Particles have more energy and
move faster and collide more often. More
particles have energy greater than the
activation energy so more successful collisions

Question 3

How does a catalyst work?

Answer 3

Catalysts change the rate of chemical
reactions but are not used up during the
reaction. Different reactions need different
catalysts. Catalysts are important in increasing
the rates of chemical reactions used in
industrial processes to reduce costs.

Question 4

How does pressure affect a gas?

Answer 4

Increasing pressure increases the
number of collisions as the particles are closer.

Question 5

How does surface area affect a solid when reacting?

Answer 5

Increases the number of
collisions as there is more surface exposed