Exothermic and Endothermic Reactions

In an exothermic reaction, heat is released and the temperature goes up.
exo1

We mixed hydrogen peroxide with yeast to create an exothermic reaction.
exo2

Fritz was pretty freaked out by it because the bubbles were heaving like it was alive and breathing.
exo3

The temperature of the mixture went up quite dramatically.
exo4

The cup got very, very hot.

In an endothermic reaction, heat is absorbed and the temperature goes down.
endo1

We mixed lemon juice with baking soda to create an endothermic reaction.
endo2

It bubbled up a whole lot and Cameron had to run the cup to the kitchen to avoid making a mess.
endo3

The temperature of the mixture went down and the cup got very, very cold.
endo4

2 thoughts on “Exothermic and Endothermic Reactions

  1. Pingback: Experiments that cause temperature change (Exothermic and Endothermic) | Homeschool With YouTube

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