grade 7 physical changes and chemical changes
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Lesson duration is: 30 minItems in this lesson
Slide 1 - Slide
I can differentiate physical changes and chemical changes
Totally agree
totally disagree
partially agree
disagree
Slide 2 - Poll
Slide 3 - Slide
Give any three differences between physical change and chemical change
Slide 4 - Open question
If you leave a piece of iron in the open for a few days, it acquires a film of brownish substance, called rust.
(a) Do you think rust is different from iron?
(b) Can you change rust back into iron by some simple method?
(c) Do you think formation of rust from iron is a chemical change?
(d) Give two other examples of a similar type of change.
(a) Do you think rust is different from iron?
(b) Can you change rust back into iron by some simple method?
(c) Do you think formation of rust from iron is a chemical change?
(d) Give two other examples of a similar type of change.
