Observations and Physical vs. Chemical Changes
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Slide 1 - Tekstslide
Slide 2 - Tekstslide
Slide 3 - Video
How could you tell a reaction had happened?
Slide 4 - Open vraag
Slide 5 - Tekstslide
Slide 6 - Video
What observations did you make?
Slide 7 - Open vraag
Slide 8 - Video
What observations did you make?
Slide 9 - Open vraag
Slide 10 - Video
What observations did you make?
Slide 11 - Open vraag
Slide 12 - Video
What observations did you make?
Slide 13 - Open vraag
Slide 14 - Tekstslide
Slide 15 - Tekstslide
Is this a chemical reaction?
Yes
No
Slide 16 - Poll
Slide 17 - Tekstslide
A
Physical change
B
Chemical change
Slide 18 - Quizvraag
A
Physical change
B
Chemical change
Slide 19 - Quizvraag
A
Physical change
B
Chemical change
Slide 20 - Quizvraag
A
Physical change
B
Chemical change
Slide 21 - Quizvraag
A
Physical change
B
Chemical change
Slide 22 - Quizvraag
A
Physical change
B
Chemical change
Slide 23 - Quizvraag
Are these physical changes or chemical reactions?
Physical change
Chemical reaction
Melting butter
Dissolving salt in water
Burning a bonfire
Freezing water
Adding Mentos to Coca Cola
Baking a cake
An explosion
Slide 24 - Sleepvraag
Give 3 examples of an observation you might make during a reaction.
Slide 25 - Open vraag
How do we tell the difference between a physical change and a chemical reaction?
Slide 26 - Open vraag
Two colourless liquids mix. They form a yellow solid. Is this a chemical reaction or a physical change. Explain why.
