Exothermic vs Endothermic Reactions Worksheet
Exothermic vs Endothermic Worksheet
1. Change 1. When calcium carbonate forms calcium oxide and carbon dioxide heat is absorbed.
Change 2. Calcium oxide releases heat when shaken with carbon dioxide.
Which line BEST describes these changes?
1. change 1 is exothermic; change 2 is endothermic
2. change 1 is endothermic; change 2 is endothermic
3. change 1 is exothermic; change 2 is exothermic
4. change 1 is endothermic; change 2 is exothermic
2. Which of the following involves a chemical reaction?
1. cooking a cake
2. filtering sand from water
3. fractionally distilling oil
4. melting ice
3. Which of these involves a chemical reaction?
1. boiling water
2. apples decaying
3. magnetizing iron
4. ice melting
4. Which of these processes is always exothermic?
1. evaporation
2. insulation
3. combustion
4. Melting
5. When ammonium chloride dissolves in water the temperature falls. The type of energy change is described as?
1. exothermic
2. activated
3. endothermic
4. a decomposition
6. Which of these involves a physical change and NOT a chemical reaction?
1. apples decaying
2. iron rusting
3. frying bacon
4. boiling water
7. Which of the following temperature changes is NOT the result of a chemical change?
1. a rise in temperature as neutralisation takes place
2. a rise in temperature when a fuel burns
3. a fall in temperature as a precipitate falls
4. a fall in temperature as liquid metal cools to solidify
8. Which of the following results in a chemical reaction?
1. adding vinegar to water
2. leaving milk to go sour
3. stirring sugar with tea
4. mixing salt with water
9. Which of these process is always exothermic?
1. melting
2. condensing
3. boiling
4. Evaporation
10. The chemical change when a fuel burns can be described as?
1. a precipitation
2. an exothermic reaction
3. a reversible reaction
4. an endothermic reaction
11. Heat is taken in when ammonium nitrate dissolves
1. Change 1. When calcium carbonate forms calcium oxide and carbon dioxide heat is absorbed.
Change 2. Calcium oxide releases heat when shaken with carbon dioxide.
Which line BEST describes these changes?
1. change 1 is exothermic; change 2 is endothermic
2. change 1 is endothermic; change 2 is endothermic
3. change 1 is exothermic; change 2 is exothermic
4. change 1 is endothermic; change 2 is exothermic
2. Which of the following involves a chemical reaction?
1. cooking a cake
2. filtering sand from water
3. fractionally distilling oil
4. melting ice
3. Which of these involves a chemical reaction?
1. boiling water
2. apples decaying
3. magnetizing iron
4. ice melting
4. Which of these processes is always exothermic?
1. evaporation
2. insulation
3. combustion
4. Melting
5. When ammonium chloride dissolves in water the temperature falls. The type of energy change is described as?
1. exothermic
2. activated
3. endothermic
4. a decomposition
6. Which of these involves a physical change and NOT a chemical reaction?
1. apples decaying
2. iron rusting
3. frying bacon
4. boiling water
7. Which of the following temperature changes is NOT the result of a chemical change?
1. a rise in temperature as neutralisation takes place
2. a rise in temperature when a fuel burns
3. a fall in temperature as a precipitate falls
4. a fall in temperature as liquid metal cools to solidify
8. Which of the following results in a chemical reaction?
1. adding vinegar to water
2. leaving milk to go sour
3. stirring sugar with tea
4. mixing salt with water
9. Which of these process is always exothermic?
1. melting
2. condensing
3. boiling
4. Evaporation
10. The chemical change when a fuel burns can be described as?
1. a precipitation
2. an exothermic reaction
3. a reversible reaction
4. an endothermic reaction
11. Heat is taken in when ammonium nitrate dissolves