Do you know the difference between exothermic and endothormic?
Exothermic and Endothermic Reactions Quiz
0 of 10 Questions completed
You have already completed this quiz. You cannot start it again.
Quiz is loading…
You must sign in or sign up to take this quiz.
You must first complete the following:
0 of 10 Questions answered correctly
Time has elapsed.
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Energy is transferred between the environment and reactants during a chemical reaction. What form is this energy usually in?CorrectIncorrect
Drag and drop to match the reaction to the correct type
- Takes in energy, making the surroundings cooler
- Transfers energy to the surroundings
Reaction profiles are used to show the energy transfers during reactions. Drag and drop to match the reaction profile to the correct type of energy transfer.
In which type of reaction would the temperature of a solution increase?CorrectIncorrect
Ectothermic, mesothermic, exothermic, endothermic
Correct 2 / 2 PointsIncorrect / 2 Points
Complete the sentence: Breaking bonds is and making bonds is
What is the term that is blurred in the diagram?CorrectIncorrect
Drag and drop to match the description to the correct term
- More thermal energy is released in forming bonds in the products than is needed to break bonds in the reactants
- Less thermal energy is released in forming bonds in the products than is needed to break bonds in the reactants
Which of the following statements accurately describe catalysts?CorrectIncorrect
A bond energy is the energy needed to break one mole of a particular covalent bond. Calculate the overall bond energies of the following reaction using the table provided. 2(H-H) + O=O → 2(H-O-H)CorrectIncorrect
Use the following words to match the reaction to the correct type. You can use each word more than once.
Endothermic, Exothermic, Both
- Displacement reactions:
- Neutralisation reactions
- Precipitation reactions:
- A salt dissolving in water:
Is Photosynthesis Endothermic or Exothermic?
Photosynthesis is an endothermic reaction because it requires energy from the sun in order to form glucose.
Photosynthesis can also occur with artificial light sources and follows the same equation:
carbon dioxide + water → glucose + oxygen.
This reaction is often shown with sunlight (or light) above the arrow and chlorophyll below the arrow. This indicates that these are required for the reaction to take place but do not contribute to the products or reactants.
Find out more about reactions with our rates of reaction quiz.
Exothermic and Endothermic Reaction Examples
Endothermic reactions take in energy (usually in the form of thermal energy) from their surroundings, this leads to heating. Solutions can be good examples of this and as an example, if calcium chloride dissolves in water the temperature of the solution will increase. Exothermic reactions do the opposite, releasing energy into the environment. When ammonium chloride dissolves in water, the temperature of the solution will decrease, indicating an exothermic reaction has taken place.
Take a look at the reaction profiles below to see how these energy changes take place.