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| Introduction to Chemistry | Series of demonstrations. YouTube. 1 hour | 4 Star | |
| Gas molecules in motion | From absorblearning.com | 4 Star | |
| Making and breaking bonds | From absorblearning.com | 4 Star | |
| Nice animation of changing state when heat is applied | From Phet. Notice that it is not possible to make the molecules absolutely motionless | 5 Star | |