Science project

Is It Better To Refrigerate Or Freeze To Prevent Bacteria On Foods?

Research Questions:

How does a refrigerator/ freezer work

Before refrigerators and freezers were invented, people cooled their food and kept them from spoiling by putting it in ice and snow. This was obvious not convenient and does not nearly have the same power as a mechanic refrigerator/ freezer does.


  • Raw meat of the same size
  • Refrigerator/ freezer combo
  • Microscope
  • Thermometer
  • Pen and paper for notes

Experimental Procedure:

  1. Take the temperature of the freezer and the refrigerator. Write this down.
  2. Put one of the fresh meats in the freezer compartment/section and the other in the refrigerator section for at least 1 week.
  3. After at least 1 week, observe the meats in a well slide under a microscope. Look for bacteria. Bacteria can be identified because of their stringy shape and one-celled cell structure with no true nucleus.
  4. Decide which meat has more bacteria.
  5. Evaluate your results.

Terms/Concepts: Refrigeration; Freezing; Bacteria; Food safety; Temperature


Myers, Richard (2003). The Basics of ChemistryGreenwood Publishing Group. p. 14. ISBN 0313316643.

Disclaimer and Safety Precautions provides the Science Fair Project Ideas for informational purposes only. does not make any guarantee or representation regarding the Science Fair Project Ideas and is not responsible or liable for any loss or damage, directly or indirectly, caused by your use of such information. By accessing the Science Fair Project Ideas, you waive and renounce any claims against that arise thereof. In addition, your access to's website and Science Fair Project Ideas is covered by's Privacy Policy and site Terms of Use, which include limitations on's liability.

Warning is hereby given that not all Project Ideas are appropriate for all individuals or in all circumstances. Implementation of any Science Project Idea should be undertaken only in appropriate settings and with appropriate parental or other supervision. Reading and following the safety precautions of all materials used in a project is the sole responsibility of each individual. For further information, consult your state's handbook of Science Safety.

Add to collection

Create new collection

Create new collection

New Collection


New Collection>

0 items