Teacher Site Map
7th Grade Core
USOE Science Home Page

Does It Matter?

Matter is anything that has mass and takes up space. Because there are so many types of matter, it is helpful to use a classification system to categorize the types of matter. The following diagram represents a common type of classification system used for matter.
Anything that takes up space and has mass.
The smallest particle that has the properties of an element.
The smallest unit of a substance that shows the properties of that substance

The molecule of water pictured below has three atoms; one Oxygen atom and two Hydrogen atoms.

Click to download the small or large animation.

One drop of water has 390,000,000,000,000,000,000,000 molecules of water in it!

A molecule of Carbon Dioxide has one Carbon atom and two Oxygen atoms.
Click to download the small or large animation.
A molecule of Propane has three Carbon atoms and eight Hydrogen atoms.
Click to download the small or large animation.

Got it?

Read each of the following descriptions. Determine if they represent the definitions you learned for matter, atom, molecule, or properties. Drag to find your choice for each description. Highlight the box below to check your answers.

Highlight the box below to check your answers!
1. Atom, 2. Molecule, 3. Molecule, 4. Molecule, 5. Atom, 6. Molecule

Review science safety rules here.

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 7th grade science core.

Updated October 24, 2008 by: Glen Westbroek

Science Home Page | Curriculum Home Page | 7th Science Core Home Page | USOE Home Page

Copyright Utah State Office of Education.