C6 - Chemical Change Flashcards
1
Q
What is a rate of reaction?
A
How fast the reactants are changed into products
2
Q
What is a reactant?
A
Substances that react with each other in a chemical reaction
3
Q
Graphs for the rate of reaction
A
- The steeper the line, the faster the rate of reaction
- The line becomes less steep as the reactants are used up
4
Q
What does the rate of reaction depend on?
A
- The collision frequency (how often they collide)
- The energy transferred during a collision
5
Q
What is a catalyst?
A
A substance that speeds up a reaction, without being used up
6
Q
How to calculate the mean rate of reaction?
A
Amount of reactant used or amount of product formed/time
