VanCleave's Science Fun

Your Guide to Science Projects, Fun Experiments, and Science Research

  • Home
  • ASK JANICE
  • Teacher Guide
  • Homeschool Science For Kids
Home » Catalyst Model

Catalyst Model

By Janice VanCleave

What is A Catalyst?

A catalyst is a chemical that changes the rate of a chemical reaction, but does not become part of the product.

  • Catalyst generally increases the rate of a chemical reaction.
  • Catalysts are not all the same, one type of catalysts cause chemicals to break apart forming two or more  smaller molecules. Other types of catalysts cause two or more chemicals to combine forming one large molecule.
  • Catalysts in living organisms are called enzymes.

Model a Catalyst

You can model a catalyst that connects two chemicals using one 2-by-8-inch (5-by-20-cm) strip of paper and two large metal paper clips.

  • paper strip represents the enzyme
  • paper clips represent two chemicals

1. Fold the paper strip in three parts as shown to form three layers.
2. Look at the diagram carefully.

  1. Note that the spotted paper clip on the left is clipped on the first two layers of the folded paper.
  2. The black paper clip on the right is clipped on the second and third layers of the folded paper.

Caution: Wear eye protection. The paper clips tend to fly out if the paper is pulled quickly.

Holding the two free ends of the folded paper, pull the ends  in opposite directions until the paper is stretched out.

Summation: The movement of the paper results in the paper clips being joined.

The folded paper represents a catalyst which increases the possibility that two chemicals (colored paper clips) will combine. The combined paper clips represent a new chemical product. The catalyst is actively involved in the chemical combination  (connection of the paper clips) but the catalyst (paper) is not a reactant or part of the product. The catalyst can be used over and over again.

Enzymes are catalyst in living organisms. For more information, see ENZYMES.

For more information about enzymes, see Janice VanCleave’s Food and Nutrition for Every Kid.

food-nutrition Page Reference

VanCleave, Janice. “Catalyst Model.”
Enzymes. 01 August 2010.
https://scienceprojectideasforkids.com/2010/catalyst/

Share this:

  • Click to email a link to a friend (Opens in new window) Email
  • Click to share on X (Opens in new window) X
  • Click to share on Facebook (Opens in new window) Facebook
  • Click to print (Opens in new window) Print

Filed Under: Biology Tagged With: catalyst

Topic Search

Visitors From All Over the World


Welcome to Janice’s Science Extravaganza!

The spoon hanging from the string vibrates when struck and these vibrations are transmitted through the string and the sound is amplified by the plastic cups. ABOUT ME: Hi, I am Janice VanCleave, author of 50 best-selling science experiment books for children ages 4 through high school. I taught science for 27 years. MORE.....

Copyright © 2025 · Janice Van Cleave · JVC's Science Fair Projects · Log in