Isis De Muinck    ACS Amman

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.

4. The solution bubbled.

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

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

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

 

Observations:

It bubbled after we put it on the table. The catalyst speed up the bubbling.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Conclusion:

The hydrogen Proxide caused the bubbling. The yeast made it change color. The yeast was the  catalyst. A catalyst is a substance that speeds up the reaction. :)