Chemistry

Question 1

How to measure the rate of reaction

Answer 1

Reactant used over time or product formed(g) or cm3 over time(s)

Question 2

What factors effect the rate of reaction

Answer 2

Teamperature
Surface Area
Concentration/Pressure
Catalysts

Question 3

Where is the rate of reaction quickest

Answer 3

At the very beginning

Question 4

What is collision theory

Answer 4

For particles react,they have to collide with each other with sufficient Energy

Question 5

What is activation energy

Answer 5

The minimum amount of energy needed for a reaction to happen

Question 6

How does temperature effect the rate if reaction

Answer 6

Higher temperature results in a quicker reaction because the particles have more energy energy which results in more particles colliding with more energy than the activation energy

Question 7

How does Surface Area effect the rate of reaction

Answer 7

A larger surface area results in a quicker reaction because more reactant is exposed to the solution which means more frequent collisions

Question 8

How does a catalyst effect the rate of reaction

Answer 8

Catalysts increase the rate of reaction by offering a alternate pathway which has a lower activation energy which results in more successful collisions

Question 9

Is a Catalyst used up in a reaction

Answer 9

No

Question 10

Does a sugar cube have more or less surface area than powdered sugar

Answer 10

Less