Physical and chemical changes_Grade7
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La durée de la leçon est: 50 minÉléments de cette leçon
Slide 1 - Diapositive
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What is a change?
Slide 2 - Carte mentale
Slide 3 - Lien
Slide 4 - Diapositive
Does the colour of the paper change?
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YES
NO
Slide 5 - Sondage
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What are the characteristics
of a physical change
of a physical change
Slide 6 - Carte mentale
Slide 7 - Diapositive
Are all physical changes reversible?
Give examples.
Give examples.
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Slide 8 - Question ouverte
Give two examples of Physical Change
based on what you have learned.
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Slide 9 - Question ouverte
Is rusting a physical or chemical change?
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Slide 10 - Question ouverte
Slide 11 - Diapositive
Slide 12 - Diapositive
What are the other characteristics of a chemical change?
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Slide 13 - Question ouverte
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Give some examples
of chemical changes
of chemical changes
Slide 14 - Carte mentale
Physical Change
Chemical Change
Slide 15 - Question de remorquage
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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 - Question de remorquage
Create a Venn diagram to compare the characteristics of physical and chemical change.
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Slide 17 - Question ouverte
Condensation of steam is a physical or chemical change? Justify your answer
Slide 18 - Question ouverte
LPG in a gas cylinder is in form of a liquid. Which physical and chemical changes occur when it burns?
Slide 19 - Question ouverte
1.Dissolving sugar in water is a_______ change
A
Physical change
B
Chemical change
C
Colour change
D
None of the above
Slide 20 - Quiz
2. Formation of curd is a __________change.
A
Physical Change
B
Chemical change
C
None of these
D
colour change
Slide 21 - Quiz
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 - Quiz
Slide 23 - Lien
I am able to differentiate between physical and chemical changes
