Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 584 · 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 keeps turmeric yellow. (a) True (b) False
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) salt water (d) tamarind water
4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) a comb (d) white paper strips
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) a balloon
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a mirror (d) a dropper or spoon
8. 8.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
9. 9.True or false: orange juice is an acid. (a) True (b) False
10. 10.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
11. 11.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a magnet (d) white paper strips
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
15. 15.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a dropper or spoon (c) yeast (d) a mirror
16. 16.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
17. 17.True or false: salt water keeps turmeric yellow. (a) False (b) True
18. 18.True or false: soap solution keeps turmeric yellow. (a) True (b) False
19. 19.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
20. 20.True or false: a magnet is needed for the turmeric test. (a) True (b) False
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) lemon juice (d) tamarind water
23. 23.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
24. 24.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
25. 25.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) salt water (d) curd
26. 26.⚖️ 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
27. 27.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
28. 28.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.True or false: soap solution is neutral. (a) False (b) True
31. 31.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
32. 32.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is hot (d) soap is an acid
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 number of drops
34. 34.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) yeast (d) soap solution
36. 36.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
37. 37.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
38. 38.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
39. 39.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
40. 40.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) yeast (d) turmeric powder

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