Type:

Other

Description:

This multimedia lesson by the American Chemical Society explores factors that affect the motion of molecules. Students add food coloring to a cup of ice water and a cup of hot water, then analyze the difference in how the colors spread/diffuse through each cup. Two interactive animations help them visualize what is happening: heating a substance increases molecular motion, while cooling decreases it. Editor's Note: Often, students in the middle grades have difficulty comprehending why the measured volume increases slightly when water is heated. Many have the misconception that volume is always conserved in a physical change. This resource provides a clear way to understand the volume differences that can occur when molecules move further apart or closer together by heating/cooling. Included in the lesson is a student activity sheet with answer key and suggested discussion questions.

Subjects:

  • Mathematics > General

Education Levels:

  • Grade 1
  • Grade 2
  • Grade 3
  • Grade 4
  • Grade 5
  • Grade 6
  • Grade 7
  • Grade 8
  • Grade 9
  • Grade 10
  • Grade 11
  • Grade 12

Keywords:

properties of liquids,Grade 6,NSDL,molecular structure,Grade 9,oai:nsdl.org:2200/20130508142708172T,chemistry animations,Mathematics,heat and temperature,General Physics,volume of liquids,Properties of Matter,state changes,Thermal Properties of Matter,Modern Physics,Atomic Physics,Other Sciences,Atomic Models,Thermo and Stat Mech,Grade 8,Informal Education,Middle School,NSDL_SetSpec_ncs-NSDL-COLLECTION-000-003-112-102,volume,liquids,states of matter,Chemistry,Physics,Grade 7,thermal properties,High School,Vocational/Professional Development Education,chemistry videos

Language:

English

Access Privileges:

Public - Available to anyone

License Deed:

Creative Commons Attribution Non-Commercial Share Alike

Collections:

None
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