Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 521 · 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.True or false: tamarind water is a base. (a) False (b) True
2. 2.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) sugar water
3. 3.True or false: soap solution is an acid. (a) False (b) True
4. 4.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
5. 5.True or false: salt water is neutral. (a) True (b) False
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) white paper strips (c) a dropper or spoon (d) water
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
9. 9.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
12. 12.True or false: detergent water keeps turmeric yellow. (a) True (b) False
13. 13.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the number of drops (d) the liquid we test
15. 15.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
16. 16.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) soap solution (d) tamarind water
17. 17.True or false: a comb is needed for the turmeric test. (a) True (b) False
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
19. 19.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) a comb (d) yeast
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
21. 21.True or false: sugar water keeps turmeric yellow. (a) False (b) True
22. 22.🫧 Which of these is neutral? (a) curd (b) lemon juice (c) salt water (d) baking soda water
23. 23.🛟 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
24. 24.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) yeast (d) turmeric powder
25. 25.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
28. 28.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) lemon juice (d) tamarind water
31. 31.True or false: soap solution is neutral. (a) True (b) False
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the turmeric paper
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
36. 36.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) soap solution (d) a dropper or spoon
39. 39.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base

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