WorksheetsEndothermic and Exothermic Reactions
Total questions: 11
Worksheet time: 6mins
Temperature changes are due to changes in ________
Matter
Energy
Motion
Bonds
What is released to the environment when a chemical bonds are formed? (Choose all the correct answers)
Energy
Matter
Light
Heat
What type of reactions release more energy when the products form than is required to break the bonds?
Exothermic Reactions
Endothermic Reactions
Chemical Reactions
Physical Reactions
What happens to the surroundings in endothermic reactions?
They get hotter
They get colder
No change
Cannot be determined
What is the energy change in an exothermic reaction?
Energy is absorbed
Energy is released
No energy change
Cannot be determined
What happens to the surroundings in exothermic reactions?
They get hotter
They get colder
No change
Cannot be determined
What type of reactions require more energy to break the bonds than is released when the products form?
Exothermic Reactions
Endothermic Reactions
Chemical Reactions
Physical Reactions
Ms. Guadiamos combined baking soda and vinegar. It then formed water, carbon dioxide. Ms. Guadiamos measured the temperature of the and the surroundings got colder. What type of reaction was it?
Exothermic Reaction
Endothermic Reactions
No reaction occurred (No chemical chang)
A hand warmer is exposed to air (oxygen) and suddenly increases in temperature?
What type of reaction occurred?
Exothermic Reaction
Endothermic Reaction
No reaction occurred (no sign of chemical change)
Ms. Guadiamos put steel wool in vinegar. It turned red, rust formed, and increased in temperature. What type of reaction occurred?
Exothermic Reaction
Endothermic Reaction
No reaction happened (No Chemical Change)
Ms. Guadiamos poured salt into a cup of water and the salt dissolved. No new substances were made and the temperature of the water stayed the same. What type of reaction occurred.
Exothermic Reaction
Endothermic Reaction
No reaction occurred (no chemical change occurred)
