C5 AQA KKI

What are the units for energy

• Joules
• Newtons
• Kg
• Seconds

What type of reaction releases heat energy

• Exothermic
• Endothermic
• Thermal decomposition
• Photosynthesis

What type of reaction takes in heat energy

• Exothermic
• Endothermic
• Thermal decomposition
• Respiration

In what type of reaction do the reactants has less energy than the products

• Exothermic
• Endothermic

In what type of reaction do the reactants have more energy than the products

• Exothermic
• Endothermic
• Thermal decomposition
• Photosynthesis

How can you tell if a reaction is exothermic?

• Rise in temperature
• Fall in temperature
• Changes colour
• Bubbles

How can you tell if a reaction is endothermic?

• Rise in temperature
• Fall in temperature
• Changes colour
• Bubbles

Which of these is an exothermic reaction?

• Combustion
• Photosynthesis
• Thermal decomposition

Which of these is an exothermic reaction?

• Respiration
• Photosynthesis
• Thermal decomposition

Which of these is an endothermic reaction?

• Respiration
• Combustion
• Thermal decomposition