Chemical Reactions Quiz

Ethan, Isla, and Evelyn are having a heated debate in their chemistry class. They are trying to figure out which of the following best describes an endothermic reaction. Can you help them out?

• a) A reaction that releases heat into the surroundings, like when Ethan accidentally set off the fire alarm during a lab experiment.

• b) A reaction that absorbs heat from the surroundings, like when Isla's ice cream melted slower in the shade.

• c) A reaction that causes an increase in temperature, like when Evelyn's hot chocolate got warmer after she stirred it.

• d) A reaction that causes a decrease in temperature, like when Ethan's soda can felt cooler after he shook it.

Noah, Harper, and Emma are in a science lab experimenting with different reactions. They come across a reaction and want to identify if it's exothermic. How can they do that?

• a) They notice a decrease in temperature

• b) The reaction feels colder to the touch

• c) The reaction causes nearby objects to become hot

• d) They observe condensation or frost on nearby surfaces

Avery, Liam, and Aria are having a science debate! They're discussing endothermic reactions. Can you help them out? Which of the following is an example of an endothermic reaction?

• a) The combustion of gasoline in a car engine

• b) Dissolving ammonium nitrate in water

• c) The reaction between vinegar and baking soda

• d) The process of photosynthesis

Imagine Oliver and Abigail are two wizards. Oliver casts endothermic spells, while Abigail casts exothermic spells. Can you tell the main difference between their spells?

Choose 2 correct answers

• a) Oliver's spells release energy into the surroundings

• b) Abigail's spells release energy into the surroundings

• c) Oliver's spells cause an decrease in temperature

• d) Abigail's spells cause a decrease in temperature

Mia, Arjun, and David are having a debate about the applications of endothermic and exothermic reactions in our daily lives. Can you help them settle the debate?

Choose 2 correct statements from the following:

• a) Hand warmers use exothermic reaction

• b) Cold packs utilize endothermic reaction.

• c) Endothermic reactions are known for releasing heat and energy

• d) Exothermic reactions are famous for absorbing heat from the surroundings