Endothermic/Exothermic Reactions

Front

In an endothermic reaction, energy is _________.

Back

absorbed

Front

____ reactions usually feel cold.

Back

endothermic

Front

_____ reactions usually feel hot!

Back

exothermic

Front

During an exothermic reaction, heat is _________ and chemical bonds __________.

Back

released, formed

Front

During an endothermic reaction, heat is ________ and chemical bonds _______.

Back

absorbed, broken

Front

What type of reaction occurs in a hand warmer?

Back

exothermic

Front

A student mixed two chemicals to allow them to react. The temperature before the reaction was 25 °C. The temperature after the reaction was 18 °C. Which of the following is true?

Back

It is an endothermic reaction

Front

Back

exothermic

Front

Back

endothermic reaction

Front

Heat transfers from an area of ____temperature to an area of ___ temperature.

Back

high to low