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5th Grade Core
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I'm Freezing

You're the scientist!

Matter cannot be created nor destroyed but it can certainly be changed.

Scientists say this is the law ... does it really work when things are frozen? Try the following experiment to see!

Image Source: DN-0078587, Chicago Daily News negatives collection, Chicago Historical Society.


What happens to the weight of matter when it freezes?


Write down your answer.


  • Beaker or similar container
  • Water
  • Scale
  • Ice cube tray
  • Access to a frezzer


  1. Measure 20 grams of water. Be sure to weigh the container FIRST and then subtract the weight of the container from the total weight.
  2. Place the water in an ice cube tray and wait for it to freeze.
  3. Once frozen, remove from tray and weigh the frozen ice cube (or cubes).

What will happen to the weight of the ice cube when it freezes?


Record your measurements.


Was your hypothesis correct? Write down your answer.


Get the plug-ins: Get Adobe Acrobat Reader , and Get Quicktime Player. (The QuickTime plug-in is needed to play sounds and movies correctly.)

Want to share photos of you or your friends doing this activity? Send it in an e-mail with the following information:

  1. The title of the activity
  2. The URL (Internet address)
  3. Your name.
Remember that no pictures can be used that show student faces or student names on it. 

Teachers should view the Teacher Site Map to relate Sci-ber text and the USOE 5th grade science core.

Updated October 24, 2008 by: Glen Westbroek

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