Physical and chemical changes_Grade7
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Lesduur is: 50 minOnderdelen in deze les
Slide 1 - Tekstslide
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What is a change?
Slide 2 - Woordweb
Slide 3 - Link
Slide 4 - Tekstslide
Does the colour of the paper change?
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YES
NO
Slide 5 - Poll
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What are the characteristics
of a physical change
of a physical change
Slide 6 - Woordweb
Slide 7 - Tekstslide
Are all physical changes reversible?
Give examples.
Give examples.
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Slide 8 - Open vraag
Give two examples of Physical Change
based on what you have learned.
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Slide 9 - Open vraag
Is rusting a physical or chemical change?
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Slide 10 - Open vraag
Slide 11 - Tekstslide
Slide 12 - Tekstslide
What are the other characteristics of a chemical change?
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Slide 13 - Open vraag
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Give some examples
of chemical changes
of chemical changes
Slide 14 - Woordweb
Physical Change
Chemical Change
Slide 15 - Sleepvraag
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Characteristics of chemical change
No new product is formed
New product is formed
Evolution of gas
Generation of light and sound
Only physical properties like shape, size, colour etc. of the substance changes.
Generation of characteristic smell
Only chemical properties and composition of the substance changes.
Slide 16 - Sleepvraag
Create a Venn diagram to compare the characteristics of physical and chemical change.
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Slide 17 - Open vraag
Condensation of steam is a physical or chemical change? Justify your answer
Slide 18 - Open vraag
LPG in a gas cylinder is in form of a liquid. Which physical and chemical changes occur when it burns?
Slide 19 - Open vraag
1.Dissolving sugar in water is a_______ change
A
Physical change
B
Chemical change
C
Colour change
D
None of the above
Slide 20 - Quizvraag
2. Formation of curd is a __________change.
A
Physical Change
B
Chemical change
C
None of these
D
colour change
Slide 21 - Quizvraag
3.Adding salt to water makes it salty. Which of the following statement is true regarding this change?
A
It is a chemical change because a new substance is formed.
B
It is a physical change because the original substance can be recovered.
C
It is a chemical change because there is exchange of heat.
D
It is a physical change because there is a slight change in colour.
Slide 22 - Quizvraag
Slide 23 - Link
I am able to differentiate between physical and chemical changes
