Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 652 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
2. 2.⚖️ 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 change it (c) we measure it
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a comb (d) a dropper or spoon
4. 4.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
5. 5.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.⚖️ 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 turmeric paper
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) lemon juice (c) a dropper or spoon (d) water
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
9. 9.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
10. 10.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the light we look in
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
15. 15.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
16. 16.🛟 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
17. 17.True or false: detergent water keeps turmeric yellow. (a) True (b) False
18. 18.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
19. 19.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
21. 21.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) white paper strips (d) a balloon
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) tamarind water (c) vinegar (d) soap solution
23. 23.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
24. 24.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) turmeric powder (d) water
26. 26.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
27. 27.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
28. 28.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
29. 29.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
31. 31.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
32. 32.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
33. 33.True or false: yeast is needed for the turmeric test. (a) False (b) True
34. 34.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
35. 35.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a magnet (d) a dropper or spoon
37. 37.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
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.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True

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