Our focus today was about looking at the acidity/base level of different substances. We got into partners and answered some questions using our prior knowledge. After this, we looked at the different substances we would be using today.
In order to measure the pH balance or scale we used litmus. Litmus is a piece of paper that has the ability to change colours depending on the acidity, base or neutral level of a certain substance. If you take an acidic substance and dip the red litmus paper into it, it will stay the same or get even more darker. If you dip the blue litmus paper into the acidic substance, and it turns red, it is acidic. We tested 11 substances. Before testing them out with the litmus paper, we predicted what substances are acidic, neutral or basic. After that, we tested them out and checked to see if our predictions were correct. I enjoyed this activity a lot because I am familiar with pH balances.
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