Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 136 · 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? True or false: the number of drops is kept the same. (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 change it (c) we keep it the same
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) soap solution (d) a comb
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a battery cell (d) a dropper or spoon
7. 7.⚖️ 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
8. 8.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) a battery cell (d) soap solution
9. 9.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
10. 10.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) plain water (d) baking soda water
11. 11.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
13. 13.True or false: detergent water keeps turmeric yellow. (a) False (b) True
14. 14.True or false: tamarind water is an acid. (a) False (b) True
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) sugar water (d) salt water
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) soap solution (d) a balloon
17. 17.🫧 Which of these is a base? (a) curd (b) lemon juice (c) vinegar (d) baking soda water
18. 18.🔮 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
19. 19.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
20. 20.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) water (d) turmeric powder
22. 22.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a balloon (d) a magnet
23. 23.⚖️ 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
24. 24.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
26. 26.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
27. 27.True or false: curd is a base. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
29. 29.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) turmeric powder (d) a mirror
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the light we look in
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) lemon juice (d) white paper strips
32. 32.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
34. 34.True or false: curd is neutral. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
36. 36.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
37. 37.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
40. 40.True or false: a mirror is needed for the turmeric test. (a) False (b) True

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