Lara Khorma

What are catalysts?

 

Materials:

• Graduated cylinder

• yeast

• hydrogen peroxide

• Dish washing detergent solution

 

Procedure:

1. Add 10 mL of hydrogen peroxide to a graduated cylinder.

2. Add 1 drop of detergent solution.

3. Swirl gently and watch the solution for any bubbling. (TAKE A PICTURE) 

4. Add a small amount of yeast to the hydrogen peroxide in the graduated cylinder and swirl.

5. Place the graduated cylinder on the table and watch for any bubbling.

6. Hold the graduated cylinder to see if there seems to be any change in temperature.

 

Observations:

 

When the hydrogen peroxide and the detergent solution mixed, there were little bubbles forming on the inside and on the sides of the graduated cylinder. 

 

When we added the yeast to the hydrogen peroxide and detergent solution mixture, it bubbled up on the tops and the sides and changed the liquid to a misty color. 

 

When we let the yeast, hydrogen peroxide, and detergent solution mixture sit for a little, we held it and noticed that it the solution got a little bit warmer in temperature. 

 

Conclusion:

 

We found out that a catalyst is a substance or form that quickens the time of the chemical reaction without it changing any of its chemical reactions.