Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 477 · 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.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
2. 2.⚖️ 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
3. 3.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) bright blue (d) green
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
5. 5.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
6. 6.True or false: detergent water keeps turmeric yellow. (a) True (b) False
7. 7.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) detergent water (d) plain water
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
10. 10.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) a dropper or spoon (d) a balloon
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a dropper or spoon (d) yeast
12. 12.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) soap solution (c) a mirror (d) a balloon
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) baking soda water (d) lemon juice
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
17. 17.⚖️ 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
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
19. 19.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution
21. 21.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
23. 23.True or false: salt water is a base. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) baking soda water (d) detergent water
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) soap solution (d) vinegar
26. 26.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap is magnetic (d) soap water is a base
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) turmeric powder (d) a magnet
28. 28.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) soap solution (d) turmeric powder
30. 30.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
32. 32.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a balloon (d) a comb
33. 33.🫧 Which of these is a base? (a) vinegar (b) baking soda water (c) lemon juice (d) salt water
34. 34.True or false: plain water keeps turmeric yellow. (a) True (b) False
35. 35.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
36. 36.⚖️ 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
37. 37.True or false: a magnet is needed for the turmeric test. (a) False (b) True
38. 38.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
39. 39.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
40. 40.⚖️ 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

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