Red
What is the equation for rate of reaction?
Mass / Time Volume / Time
Why does higher temperature increase rate?
Particles have more kinetic energy. More frequent, successful collisions
Why does higher concentration increase rate?
More particles in a given volume. MFC
Why do smaller pieces increase rate?
Greater surface area. MFC
What is activation energy?
The minimum amount of energy two particles need in order to react
What is a catalyst?
A substance that speeds up a reaction
How do catalysts speed up reactions?
Decrease activation energy by providing an alternative reaction pathway
How is rate measured with a colour change?
Time taken for cross to disappear
IV =?
The thing we change
DV =
The thing we measure
What is a control variable?
The things we keep the same
How can we reduce random errors?
Repeat and calculate a mean
What is resolution?
The smallest measurable change. i.e. 0.01g
What is reversible reaction?
Where the products can turn back into reactants
What is equilibrium?
Where the forward and backward reactions occur at the same rate
What colour is anhydrous copper sulphate?
White
What colour is hydrated copper sulphate?
Blue
What makes copper sulphate change colour?
Water
If the forward reaction is exothermic, what is the backward reaction?
Endothermic
Why does higher pressure increase rate?
More particles in a given volume. MFC