Aim: To test the pH of a range of household chemicals.
Method:
Add a few drops of each chemical toa spot on your spotting tile. If a substance is solid or powdered you will need to mix it with a few drops of water before testing it.
Test the chemicals with litmus paper.
Test each chemical with a few drops of Universal indicator.
Results:
Chemical Being Tested | Colour in blue litmus | Colour in red litmus | Colour in Universal indicator |
fabric soft | red | red | red |
Vinegar | Red | Red | Red |
floor cleaner | violet | violet | green |
backing soda | blue | blue | Blue |
Conclusion:
Chemical being Tested | Acid or base | Evidence from investigation |
Vinegar | Weak acid | They were light red almost orange. |
Fabric soft | weak acid | it went orange |
floor cleaner | strong base | went green |
Backing Soda | weak base | stayed blue |
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