AQA Combined Science Chemistry Paper 2 F

Front

What is the rate of reaction a measure of?

Back

Its speed

Front

How can the volume of a gas in a reaction be measured?

Back

Gas syringe / inverted measuring cylinder

Front

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

Back

quantity of reactant used/time taken

Front

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

Back

quantity of reactant product formed/time taken

Front

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

Back

In grams or in cm³

Front

Possible units for rate of reaction?

Back

g/s or cm³/s (where s is seconds), mol/s

Front

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

Back

Draw a tangent to the curve and calculate the gradient.

Front

Collision theory

Back

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

Front

What factors can affect the rate of a reaction?

Back

Temperature, surface area of a solid, concentration or reactants in solution, pressure of gases

Front

Effect of increasing surface area on reaction rate

Back

Increases the rate