Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 415 · 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 of these is a base? (a) salt water (b) soap solution (c) lemon juice (d) plain water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the light we look in
3. 3.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
4. 4.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) vinegar (c) lemon juice (d) tamarind water
6. 6.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a balloon (c) turmeric powder (d) white paper strips
8. 8.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
9. 9.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
10. 10.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a balloon (d) a mirror
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) tamarind water (d) vinegar
13. 13.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) white paper strips (d) a magnet
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a mirror (d) turmeric powder
15. 15.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
17. 17.⚖️ 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
18. 18.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
19. 19.True or false: curd is an acid. (a) False (b) True
20. 20.🛟 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
21. 21.True or false: orange juice is a base. (a) True (b) False
22. 22.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
23. 23.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.True or false: plain water keeps turmeric yellow. (a) False (b) True
25. 25.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is an acid (c) soap is magnetic (d) soap water is a base
26. 26.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
27. 27.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) white paper strips (c) soap solution (d) a dropper or spoon
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
29. 29.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) soap solution (d) a battery cell
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
33. 33.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
34. 34.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
35. 35.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
36. 36.True or false: lemon juice is a base. (a) False (b) True
37. 37.🫧 Which of these is an acid? (a) plain water (b) curd (c) baking soda water (d) sugar water
38. 38.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) lemon juice (c) white paper strips (d) a dropper or spoon
39. 39.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) white paper strips (d) a balloon
40. 40.🔍 Which is the odd one out? (a) lemon juice (b) sugar water (c) soap solution (d) tamarind water

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