Endothermic And Exothermic Reactions Jp

Endothermic and Exothermic Reactions Experimental Question: How the absorption and release of energy affect temperature change during a chemical reaction? Hypothesis: Once the baking soda and vinegar mix, the mixture will fizz up causing the balloon to inflate with cold air

Materials 1. 2. 3. 4.

Empty plastic water bottle Balloon Vinegar Funnel

Instructions 1. 2. 3. 4. 5.

Fill plastic water bottle half way with vinegar Fill balloon with baking soda Attach balloon to water bottle Flip the balloon into the water bottle Record results

Reaction Baking soda + vinegar

Observations Before Reaction Vinegar is still and baking soda looks powdery

Observations During Reaction Has a fizzy reaction and is inflating the balloon Temperature is cold

Observations After Reaction Temperature is very cold and balloon is now deflated. A very sour smell is being admitted from the balloon and the bottle

Analysis and Conclusion: Hypothesis proved to be correct. The data proved the predicted outcome. Maybe next time add a lot less baking soda and see is the reaction is bigger or smaller.