Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 859 · 40 questions

What you do (Yellow or red?): 1. Mix turmeric powder with a little water into a paste and paint it on white paper strips; let them dry. 2. Put a drop of soap solution on one strip and a drop of lemon juice on another. 3. Write down the colour each drop makes. 4. Add lemon juice to the reddish spot and watch it change back.

1. 1.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the light we look in
3. 3.🫧 Which of these is neutral? (a) vinegar (b) tamarind water (c) plain water (d) detergent water
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) a dropper or spoon (d) water
5. 5.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
6. 6.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
7. 7.True or false: plain water is a base. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the number of drops
11. 11.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
12. 12.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
13. 13.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) a balloon (d) lemon juice
14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
15. 15.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) water (d) a battery cell
16. 16.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
17. 17.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) tamarind water (d) vinegar
19. 19.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
20. 20.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) soap solution (c) a comb (d) water
21. 21.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
22. 22.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) soap solution (d) white paper strips
23. 23.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
24. 24.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a comb (d) soap solution
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) white paper strips (d) turmeric powder
29. 29.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) lemon juice (d) plain water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap is hot (d) soap water is a base
33. 33.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
34. 34.True or false: a comb is not needed for the turmeric test. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
36. 36.True or false: plain water keeps turmeric yellow. (a) True (b) False
37. 37.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a mirror (d) turmeric powder
38. 38.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) vinegar (d) baking soda water
40. 40.True or false: a mirror is needed for the turmeric test. (a) False (b) True

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