Turmeric Indicator Experiment Worksheet

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

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