Home 3.5 Distinguishing Physical and Chemical Changes

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3.5 Distinguishing Physical and Chemical Changes

 

 

SUMMARY

Examples of both physical and chemical changes are given. Evidence that suggests one change over the other is presented. Duration: 7:25.

 

VIDEO CHECK QUESTIONS

3.5a What is it that both a physical and chemical change involve?
3.5b Which is easier to reverse: a physical or chemical change?
3.5c Which involves more energy per gram of material: a physical or chemical change?

All video check questions can be downloaded from the EXTRAs menu.