On Friday afternoon our Year 10 Science 2 class studied acids and bases in an enthralling experiment!
We used indicators and acids to explore pH levels when mixed together. We extracted an acid based indicator from red cabbage, and used known substances like vinegar and bicarb soda to observe the changes in colour, which was then compared to a universal indicator chart.
We also compared the colour differences in the cabbage indicator and the universal indicator mixes. This reaction occurs because H+ ions are found in acids, and H- ions are found in the base.
By changing the amount of acid or base used, we were able to change the colour and shade of the solution.