- Aim: why did we do the experiment?
I want to learn how to make and acid-base indicators using everyday substances
- Equipment: what did you use for your experiment?
- Red cabbage
- beetroot
- tea turmeric
- cranberry juice
- beaker
- water
- Heating plate
- test tube rack
- safety glasses
- hydrochloric acid
- base
- Pipepet
- Method: what steps did you complete to get your results for your experiment? Use slide 100 to help
- Chop the cabbage into small pieces until you have enough to fill the small beaker
- place the cabbage into the small or large beaker then add boiling water
- then keep boiling it over the heating plate until it re-boiled
- until the color has seeped out
- repeat the steps with the beetroot
- then with a pipet get some of the beetroot juice
- add a little test tube rack fill only to test tubes
- then add some acid and base to each of the test tubes
- Results: Pictures
- Discussion: starting discussion questions (you can include more detail)
- What colour did each indicator change in an acid vs. a base? My group did the beetroot it started off by being a deep red but once we added the base it was still red just a lighter red then once we added the base it turned an orange colour.
Photo:
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- Were some indicators better than others – if so, why do you think this is? Yes because some of them changed better coulers than others and if it changes color by a lot of them it means it worked. the cabbage showed that I could find out more information about the pH level because the colour changed better with gives be more information also about the cabbage indicator.
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- Conclusion: starting conclusion questions (you can include more detail)
- did all your experiments work – if they didn’t, why? yes they did they worked because it changed colour when the acid and base were added.
- What could you do to improve next time? Maybe try adding more acid to the beetroot and more base as well.boil it longer and experiment with more indicator
