Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Chemistry > Rates Of Reaction > Flashcards

Rates Of Reaction Flashcards

You may prefer our related Brainscape-certified flashcards:
AP® Chemistry flashcards Periodic Table flashcards Chemistry 101 flashcards Organic Chemistry 101 flashcards
1
Q

What is the rate of a chemical reaction in terms of reactants?

A

How quickly the reactants in a reaction are used up

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

What is the rate of a chemical reaction in terms of products?

A

How quickly the products in a reaction are formed

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

What is the formula for a mean rate of reaction in terms of reactants?

A

quantity of reactant used/time taken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

What is the formula for a mean rate of reaction in terms of products?

A

quantity of reactant product formed/time taken

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

How can you measure the quantity of a reactant or product?

A

In grams or in cm³

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What are the two possible units for rate of reaction?

A

g/s or cm³/s (where s is seconds)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

How could you measure the rate of a reaction from a graph?

A

Draw a tangent to the curve and calculate the gradient.

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

What is “collision theory”?

A

The theory that chemical reactions only occur when particles collide with sufficient energy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

What factors can affect the rate of a reaction?

A

Temperature

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

State the effect of increasing the surface area on the rate of a reaction

A

Increases the rate

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Explain why increasing the surface area increases the rate of a reaction

A

More particles are available to collide

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

State the effect of increasing the concentration on the rate of reaction

A

Increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Explain why increasing the concentration increases the rate of reaction

A

More concentrated means more particles in solution

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

State the effect on increasing the pressure of a gas on the rate of reaction

A

Increases

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Explain why increasing the pressure of a gas increases the rate of a reaction

A

Less space for the particles to move around in

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

State the effect of increasing the temperature on the rate of reaction

A

Increases

17
Q

What is the activation energy?

A

The amount of energy a particle needs before it will be able to react when it collides with another particle

18
Q

Explain why increasing the temperature increases the rate of reaction

A

Increases the speed at which particles move therefore more frequent collisions. Increases the number of particles which have the activation energy therefore more collisions result in a reaction.

19
Q

What is a catalyst?

A

Something which changes the rate of a reaction but is not used up in that reaction

20
Q

How do catalysts speed up reactions?

A

They provide another route for the reaction to take place which has a lower activation energy.

Chemistry (4 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions