AQA GCSE Chemistry Unit 3.3

1

In the equation Q = mcΔT, what does c stand for?

1

In the equation Q = mcΔT, what does ΔT stand for?

1

True or false? To find out the energy released per gram, we measure the change of mass in fuel and divide by that value.

1

True or false? To find the energy released per mole, we divide the energy released per gram by the relative formula mass of the substance.

1

Why do simple calorimeters not give an accurate reading for temperature change?

1

Which of these are features of a simple calorimeter?

1

What would be the correct equation if 50g of acid was mixed with 50g of alkali causing a temperature rise of 9°C?

1

True or false? When measuring energy changes in solutions, we assume the solution behaves like water.

1

In an exothermic reaction, which side of the energy level diagram has more energy?

1

In an endothermic reaction, which side of the energy level diagram has more energy?

1

True or false? The energy change of a reaction is the difference between the maximum activation energy and the energy of the products.

1

How would an energy level diagram be different if a catalyst were present?

1

True or false? Bond breaking is exothermic.

1

What unit are bond energies measured in?

1

True or false? The bond energy needed to break a particular bond is the same as the bond energy released in forming that bond.

1

What is the ΔH of a reaction?

1

Which gas is being looked at as a possible alternative to petrol fuels?

1

True or false? The only waste product of the combustion of hydrogen is water.

1

What do we use to combust hydrogen?

1

Which of these are disadvantages of using hydrogen as a fuel?

Twenty questions on the third section in Unit 3 of AQA GCSE Chemistry: Energy calculations.

AQA GCSE Chemistry Unit 3.3

In the equation Q = mcΔT, what does c stand for?

In the equation Q = mcΔT, what does ΔT stand for?

True or false? To find out the energy released per gram, we measure the change of mass in fuel and divide by that value.

True or false? To find the energy released per mole, we divide the energy released per gram by the relative formula mass of the substance.

Why do simple calorimeters not give an accurate reading for temperature change?

Which of these are features of a simple calorimeter?

What would be the correct equation if 50g of acid was mixed with 50g of alkali causing a temperature rise of 9°C?

True or false? When measuring energy changes in solutions, we assume the solution behaves like water.

In an exothermic reaction, which side of the energy level diagram has more energy?

In an endothermic reaction, which side of the energy level diagram has more energy?

True or false? The energy change of a reaction is the difference between the maximum activation energy and the energy of the products.

How would an energy level diagram be different if a catalyst were present?

True or false? Bond breaking is exothermic.

What unit are bond energies measured in?

True or false? The bond energy needed to break a particular bond is the same as the bond energy released in forming that bond.

What is the ΔH of a reaction?

Which gas is being looked at as a possible alternative to petrol fuels?

True or false? The only waste product of the combustion of hydrogen is water.

What do we use to combust hydrogen?

Which of these are disadvantages of using hydrogen as a fuel?