Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 200 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) turmeric powder (d) white paper strips
2. 2.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) tamarind water (d) vinegar
5. 5.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
6. 6.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
9. 9.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a balloon (d) water
10. 10.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
11. 11.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it disappears (d) it turns darker red
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
13. 13.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
14. 14.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) sugar water (c) tamarind water (d) lemon juice
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) lemon juice (d) white paper strips
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) detergent water (c) lemon juice (d) salt water
18. 18.True or false: vinegar is neutral. (a) False (b) True
19. 19.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) turmeric powder (d) a magnet
20. 20.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a comb (d) yeast
21. 21.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) a dropper or spoon (d) a battery cell
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
25. 25.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
26. 26.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
27. 27.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
28. 28.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
29. 29.⚖️ 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
30. 30.True or false: orange juice is neutral. (a) False (b) True
31. 31.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) a magnet (d) white paper strips
33. 33.True or false: plain water is neutral. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
35. 35.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
36. 36.⚖️ 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 change it (c) we measure it
37. 37.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
38. 38.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
39. 39.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
40. 40.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white

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