Hydrogen Peroxide And Yeast Reaction Ml

Hydrogen Peroxide and yeast reaction Question: How does the absorption and release of energy affect temperature change during a chemical reaction?

Ingredients: -5 tablespoon of hydrogen peroxide -1/2 tablespoon of yeast -container of choice (bowl, tub, cup, etc.) -spoon -thermometer - Pencil and paper

Directions: i. ii. iii. iv. v.

Add the 5 tablespoons of Hydrogen Peroxide to the bowl and record temperature with pencil and paper Next add the ½ tablespoon of yeast to the hydrogen peroxide Immediately stir with the spoon for 5 seconds, then let it sit and create foam have safety goggles on with this portion of the experiment Record the new temperature and write down with pencil and paper Check the temperature every 1 minute and write down your observations

Safety procedures: 1. Adult supervision is required. 2. Wear safety goggles, apron, and closed-toed shoes.

3. Keep away from fire chemicals that this experiment uses are flammable 4. if swallowed get medical help or contact a poison control center 5. if it comes in contact with eyes rise out immediately

Q: How does the absorption and release of energy affect temperature change during a chemical reaction? A: The absorption and release of energy affects temperature change during a chemical reaction because, when an exothermic reaction is happening energy is released when the two chemicals to mix and temperature goes higher. But during an endothermic reaction energy is being absorbed when the two chemicals mix and the temperature goes down.

Conclusion: Before I completed the experiment my hypothesis was that the temperature would rise, and after I did the experiment it proved that my hypothesis was correct. The reaction was an exothermic reaction which means the energy was released and the temperature went higher.

reaction Hydrogen peroxide + yeast

Observations Before Reaction The observations I made before the reaction was that the hydrogen peroxide was cold and the yeast was room temperature.

Observations During Reaction The observations I made during the reaction Is that when I mixed the yeast into the hydrogen peroxide and it immediately started to foam up and expand.

Observations After reaction The observations I made after the reaction was that the mixture had raised in temperature and the foaming was starting to stop.