WorksheetsEndothermic and Exothermic Chemical Reactions
Total questions: 15
Worksheet time: 15mins
Examples of exothermic
Acids + alkalis
Cooking an egg
Respiration
Evaporating liquid water
The bombardier beetle's hot spray is a result of an...
Exothermic chemical reaction
Endothermic chemical reaction
The bag you made in class that felt cold afterwards was an example of an...
Exothermic chemical reaction
Endothermic chemical reaction
The energy absorbed by endothermic reactions is used to...
form chemical bonds between atoms that release a lot of energy when they're formed
break chemical bonds that require a lot of energy to break
Endothermic reactions feel...
Hot
Cold
Exothermic reactions feel...
Hot
Cold
True or false: Exothermic reactions mostly absorb energy.
True
False
True or false: Exothermic reactions mostly release energy.
True
False
This is an example of an...
Exothermic chemical reaction
Endothermic chemical reaction
The energy released by exothermic reactions happens when...
chemical bonds that release a lot of energy when they're formed are formed between atoms
chemical bonds that require a lot of energy to break are broken
Cooking bacon as it absorbs heat and watching it change color and smell is a good example of an...
Exothermic chemical reaction
Endothermic chemical reaction
In an endothermic reaction, heat is ...
taken in
given out
Which of the following is an example of an endothermic reaction?
Photosynthesis in plants
Combustion of gasoline
Neutralization of an acid and a base
Freezing of water
In an exothermic reaction, the energy is primarily released in the form of:
Light
Heat
Sound
Electricity
What is the main characteristic of an endothermic reaction in terms of energy?
Energy is released to the surroundings
Energy is absorbed from the surroundings
Energy remains constant
Energy is converted to mass
