Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 752 · 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 turmeric paper”? (a) we keep it the same (b) we measure it (c) we change it
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) yeast (d) water
3. 3.True or false: baking soda water is neutral. (a) False (b) True
4. 4.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) a dropper or spoon (d) a battery cell
5. 5.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns darker red (d) it turns blue
6. 6.🫧 Which of these is an acid? (a) soap solution (b) lemon juice (c) plain water (d) baking soda water
7. 7.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
8. 8.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) lemon juice (d) a mirror
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the number of drops
11. 11.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
12. 12.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) sugar water
14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) water (d) white paper strips
19. 19.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
20. 20.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) tamarind water (d) detergent water
21. 21.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
22. 22.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) bright blue (d) reddish
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns green (d) it turns blue
24. 24.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
25. 25.True or false: sugar water is a base. (a) True (b) False
26. 26.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the colour we see
30. 30.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
32. 32.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) plain water (d) tamarind water
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
35. 35.True or false: lemon juice is an acid. (a) False (b) True
36. 36.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
37. 37.🫧 Which of these is an acid? (a) plain water (b) salt water (c) baking soda water (d) tamarind water
38. 38.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
39. 39.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) baking soda water (d) soap solution

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