Page 33 - Big Ideas Year 10 sciPAD 2025

PHOTOCOPYING PROHIBITED
© Silverback Academic Media 33
SCIPAD - BIG IDEAS - BOOK 2
BASIS OF CHEMICAL REACTIONS
Testing pH
Aim: To test the pH of a range of household chemicals.
Equipment: A variety of household chemicals, spotting tile, red litmus paper, blue litmus paper,
Universal indicator solution, safety glasses.
Method:
Results:
Chemical being tested Colour in blue
litmus
Colour in red
litmus
Colour in Universal
indicator
Conclusion:
Chemical being tested Acid or base? Evidence from investigation
Test the chemicals
with litmus papers.
Test each chemical with a few
drops of Universal indicator.
1
2
3
Add a few drops of each chemical
to a 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.
Unchecked Sample Pages
For Review Purposes Only - Photocopying Prohibited
www.scipad.co.nz