Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 989 · 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? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) a dropper or spoon (d) turmeric powder
3. 3.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
4. 4.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
5. 5.True or false: a magnet is needed for the turmeric test. (a) True (b) False
6. 6.🛟 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
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) salt water
8. 8.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) turmeric powder (d) soap solution
11. 11.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) soap solution (c) a magnet (d) yeast
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the light we look in (d) the number of drops
13. 13.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
16. 16.🫧 Which of these is an acid? (a) soap solution (b) curd (c) detergent water (d) salt water
17. 17.True or false: salt water is an acid. (a) True (b) False
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
20. 20.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) baking soda water (d) detergent water
21. 21.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) baking soda water
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
23. 23.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
24. 24.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
25. 25.⚖️ 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
26. 26.True or false: yeast is needed for the turmeric test. (a) True (b) False
27. 27.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) baking soda water (d) salt water
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a battery cell (d) water
29. 29.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) soap solution (c) white paper strips (d) lemon juice
31. 31.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a comb (d) a dropper or spoon
32. 32.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
33. 33.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
34. 34.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
35. 35.True or false: detergent water is neutral. (a) False (b) True
36. 36.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
38. 38.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
40. 40.True or false: tamarind water keeps turmeric yellow. (a) True (b) False

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