Topic 8 - Acids and Bases

LI: To learn about acids and bases.

For Today's tech session at Tamaki College, the Year 7's have learnt about what acids and bases are and how to determine the acidity or basicity of a solution.

First of all, we went over what pH is and how to find out the pH of a liquid/substance. The acidity or basicity of a solution is ranked on a scale from 1 to 14, 1-7 being acidic, 7 being neutral and 7 to 14 being a base.

We performed an experiment where we found out the pH level of different substances using litmus paper, a well plate and tweasers.

I enjoyed this session because I found it very interesting as well as fun to perform this experiment with the different solutions. One thing I found interesting was that the acidity or basicity of a solution is determined because of the hydroxide and hydrogen ions inside of the substance.