Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 551 · 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.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
2. 2.🫧 Which of these is neutral? (a) lemon juice (b) orange juice (c) salt water (d) vinegar
3. 3.⚖️ 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 turmeric paper (c) the liquid we test (d) the number of drops
4. 4.True or false: plain water is neutral. (a) True (b) False
5. 5.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
6. 6.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) white paper strips (d) a mirror
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) white paper strips (d) soap solution
9. 9.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) soap solution (c) a magnet (d) a mirror
10. 10.⚖️ 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
11. 11.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
12. 12.⚖️ 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
13. 13.True or false: a comb is not needed for the turmeric test. (a) False (b) True
14. 14.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
15. 15.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
16. 16.⚖️ 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
17. 17.🛟 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
18. 18.🛟 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
19. 19.⚖️ 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
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) baking soda water (c) sugar water (d) vinegar
21. 21.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
22. 22.True or false: soap solution keeps turmeric yellow. (a) False (b) True
23. 23.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
25. 25.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) soap solution (d) salt water
27. 27.True or false: a mirror is needed for the turmeric test. (a) True (b) False
28. 28.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) water (d) a battery cell
30. 30.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
31. 31.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
32. 32.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) sugar water
33. 33.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) vinegar (d) plain water
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
35. 35.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) a balloon (d) turmeric powder
36. 36.True or false: detergent water is a base. (a) False (b) True
37. 37.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
38. 38.True or false: a magnet is needed for the turmeric test. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
40. 40.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow

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