Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 474 · 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? 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 colour we see
2. 2.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) soap solution (d) salt water
4. 4.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.True or false: water is not needed for the turmeric test. (a) True (b) False
6. 6.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) turmeric powder (d) white paper strips
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
9. 9.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) vinegar (d) plain water
10. 10.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) tamarind water (d) soap solution
11. 11.True or false: a balloon is needed for the turmeric test. (a) True (b) False
12. 12.⚖️ 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 change it (c) we measure it
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
15. 15.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a comb (d) turmeric powder
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
17. 17.True or false: plain water is a base. (a) False (b) True
18. 18.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
19. 19.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) turmeric powder (d) a balloon
21. 21.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a balloon (d) a battery cell
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
23. 23.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
24. 24.⚖️ 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
25. 25.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
26. 26.True or false: curd is a base. (a) True (b) False
27. 27.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
29. 29.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) detergent water (d) plain water
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) white paper strips (d) a battery cell
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) turmeric powder (d) a magnet
32. 32.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.🫧 Which of these is neutral? (a) soap solution (b) sugar water (c) curd (d) detergent water
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) tamarind water (d) baking soda water
36. 36.True or false: water is needed for the turmeric test. (a) True (b) False
37. 37.True or false: plain water is neutral. (a) True (b) False
38. 38.True or false: plain water keeps turmeric yellow. (a) True (b) False
39. 39.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
40. 40.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True

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