Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 965 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.True or false: sugar water keeps turmeric yellow. (a) False (b) True
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) a magnet
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
5. 5.True or false: curd is a base. (a) True (b) False
6. 6.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) a balloon (d) a dropper or spoon
7. 7.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
8. 8.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
9. 9.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
11. 11.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🫧 Which of these is neutral? (a) soap solution (b) curd (c) lemon juice (d) salt water
13. 13.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
14. 14.🫧 Which of these is a base? (a) orange juice (b) salt water (c) soap solution (d) sugar water
15. 15.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
16. 16.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) lemon juice (c) plain water (d) salt water
17. 17.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
18. 18.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) lemon juice (d) soap solution
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) white paper strips (d) a comb
21. 21.True or false: vinegar keeps turmeric yellow. (a) False (b) True
22. 22.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) soap solution (d) curd
23. 23.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
27. 27.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
28. 28.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
30. 30.True or false: a comb is needed for the turmeric test. (a) False (b) True
31. 31.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.True or false: orange juice is neutral. (a) False (b) True
33. 33.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
34. 34.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a dropper or spoon (c) a balloon (d) a comb
35. 35.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) lemon juice (d) detergent water
37. 37.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
38. 38.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
39. 39.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a battery cell (d) water
40. 40.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) soap solution (d) baking soda water

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