Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 202 · 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.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
2. 2.🫧 Which of these is a base? (a) baking soda water (b) plain water (c) curd (d) orange juice
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
4. 4.True or false: soap solution is needed for the turmeric test. (a) False (b) True
5. 5.⚖️ 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 liquid we test (c) the turmeric paper (d) the colour we see
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) lemon juice (d) a balloon
7. 7.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) lemon juice (d) detergent water
9. 9.True or false: orange juice is an acid. (a) True (b) False
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) soap solution (d) tamarind water
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it turns darker red (d) it disappears
13. 13.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a comb (d) soap solution
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
15. 15.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) soap solution (d) yeast
17. 17.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) turmeric powder (d) lemon juice
18. 18.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
19. 19.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
20. 20.True or false: detergent water is a base. (a) False (b) True
21. 21.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
22. 22.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
23. 23.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
24. 24.⚖️ 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
25. 25.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
26. 26.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
27. 27.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
28. 28.⚖️ 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
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
32. 32.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a magnet (c) white paper strips (d) lemon juice
34. 34.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
35. 35.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a mirror (d) yeast
36. 36.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) soap solution (d) plain water
37. 37.🫧 Which of these is neutral? (a) curd (b) tamarind water (c) lemon juice (d) salt water
38. 38.⚖️ 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
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) turmeric powder (d) a battery cell
40. 40.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral

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