Date
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20-7-2012
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Activity Code
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5 /2 / 2.1 / 1
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Theme
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Investigating Materials
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Topic
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2. Acid and Alkaline
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Learning Outcomes
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4.1.1 Pupils identify acidic, alkaline and
neutral substances using litmus paper. | |||||||||||||||||||||||
Aim
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To investigate the relationship between
the type of solution and the change of blue and red litmus paper | |||||||||||||||||||||||
Apparatus
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Solution P(mineral water), solution Q
(salt water), solution R (vinegar), solution S (panadol solution),
solution T (toothpaste) and
solution U (lime juice),blue litmus paper and red litmus paper,beakers and petri dishes | |||||||||||||||||||||||
Method
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1. Pour small amaunt of solutions given
in the petri dish.
2. Taste all solutions P,Q,R,S,T and U.
Record your observation.
3. Then dip a red litmus paper in the
solution P and observe the colour changed.
4. Then use blue litmus paper and
observe the colour change.
5. Record your finding in the table below.
6. Repeat the above activity using solutions
Q,R,S,T and U. | |||||||||||||||||||||||
Observation
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Discussion
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1. Group the solutions above correctly.
2. Which solution have a same properties as a detergent?
Solution S and T
if we test the lemon juice.
Blue litmus paper will change to red and the red litmus paper
does not change its colour.
Conclusion : Acidic substances change the colour of blue litmus paper
to red/ Alkaline substances change the colour of red litmus paper
to blue/ Neutral substances do not change the colour of red or
blue litmus paper.
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Friday, 19 October 2012
Peka Sains Year 5
Labels:
Peka Sains
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