Equipment:
- Dimple tray / Spotting tray
- Various household chemicals
- Pipette
- Universal indicator
Method:
1. Add a couple of drops of each chemical to a Dimple tray.
2. Add a couple of drops of universal indicator to each sample.
3. Observe colors.
Results:
Chemical being tested
|
Colour in blue litmus
|
Colour in red litmus
|
Colour in Universal
indicator |
Jif
|
purple
| ||
Pump
|
Green
| ||
Harpic
|
Orange
| ||
Base
|
Blue
| ||
Pledge
|
red
|
Conclusion:
Chemical being tested
|
Acid or Base
|
Evidence from investigation
|
Jif
|
Base
|
Purple color is a strong Base
|
Pump
|
Neutral
|
Green is like in the middle
|
Harpic
|
Acid
|
Orange color is an Acid
|
Sodium Hydroxide
|
Base
|
Blue color is a strong Base
|
Pledge
|
Acid
|
Red color is an Acid
|
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