Factors Affecting Rate of Reaction Flashcards Preview

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Flashcards in Factors Affecting Rate of Reaction Deck (13):
1

What are the 4 things rate of reaction depends on

Temperature
Concentration/pressure
Surface area
Presence of a catalyst

2

What overall increases rate of reaction

More collisions

3

What happens to particles if temperatures increased

Particles move faster and collide more

4

How does increasing concentration increase rate

As there's more particles colliding

5

How does increasing surface area increase rate of reaction

If one of reactants is sold, breaking it up into smaller pieces with increase rate of reaction (more area to work on)

6

How does using a catalyst increase rate of reaction

As they decrease activation energy needed to occur

7

What's activation energy

Minimum amount of energy needed to start a reaction

8

What's a catalysts

Substance that speeds up a reaction without being used up itself

9

An advantage of catalysts

Can speed things up/slow things down

10

Disadvantage of catalysts

Can be expensive

11

What are biological catalysts called

Enzymes

12

Give a use of an enzyme

To washing powders to digest stains

13

What are 3 ways to measure rate of reaction

Precipitation and colour changes
Change in mass (gas given off)
Volume of gas given off