Rates of Reaction Flashcards Preview

GSHS AQA C2 Additional Chemistry > Rates of Reaction > Flashcards

Flashcards in Rates of Reaction Deck (10)
Loading flashcards...
1
Q

The rate of a reaction is the ______ a reaction happens.

A

Speed

2
Q

What do particles have to do in order to react?

A

Collide

3
Q

The minimum energy required for a successful collision is called the _________ energy

A

Activation

4
Q

Why does increasing the concentration increase the rate of reaction?

A

There are more particles in a given volume so there are more frequent collisions.

5
Q

Does a 10g lump of solid have a bigger or smaller surface area than 10g of powdered solid?

A

Smaller

6
Q

Why does increasing the temperature increase the rate of reaction?

A

The particles have more energy so there are more frequent and harder collisions.

7
Q

What does a catalyst do?

A

Increases the rate of reaction without being used up

8
Q

When investigating the effect of surface area on the rate of reaction, what are the control variables?

A

The mass of the solid used, the volume and concentration of the liquid used.

9
Q

Describe how the volume of gas given out in a reaction changes with time.

A

Increases quickly at first then slows down and stops.

10
Q

How do you calculate the rate of reaction

A

Measure the change in the amount of a reactant or product in a certain time.