Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 854 · 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: turmeric powder is needed for the turmeric test. (a) True (b) False
2. 2.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
3. 3.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) lemon juice (d) baking soda water
4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a comb (d) a mirror
5. 5.🫧 Which of these is a base? (a) lemon juice (b) sugar water (c) curd (d) detergent water
6. 6.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) a dropper or spoon (d) turmeric powder
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🫧 Which of these is a base? (a) salt water (b) orange juice (c) baking soda water (d) tamarind water
10. 10.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
11. 11.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) baking soda water (d) detergent water
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the light we look in
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
15. 15.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
16. 16.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
17. 17.True or false: soap solution is a base. (a) True (b) False
18. 18.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) a dropper or spoon (d) a balloon
19. 19.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a balloon (c) white paper strips (d) a dropper or spoon
20. 20.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
22. 22.🧺 Which of these is not needed for the turmeric test? (a) water (b) a comb (c) lemon juice (d) a dropper or spoon
23. 23.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
24. 24.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the light we look in (d) the liquid we test
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
27. 27.🟡 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
28. 28.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) soap solution (d) lemon juice
29. 29.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
32. 32.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a mirror (d) turmeric powder
34. 34.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
35. 35.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns yellow again (d) it turns blue
36. 36.True or false: water is needed for the turmeric test. (a) True (b) False
37. 37.True or false: sugar water keeps turmeric yellow. (a) False (b) True
38. 38.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) salt water (d) plain water
40. 40.⚖️ 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 measure it (c) we change it

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