Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 368 · 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.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap is an acid (d) soap water is a base
2. 2.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a balloon (d) white paper strips
6. 6.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
8. 8.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
9. 9.True or false: baking soda water is a base. (a) False (b) True
10. 10.🧺 Which of these is needed for the turmeric test? (a) water (b) a battery cell (c) yeast (d) a magnet
11. 11.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
12. 12.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) lemon juice (d) soap solution
14. 14.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) sugar water (d) detergent water
15. 15.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) a comb
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) False (b) True
18. 18.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
19. 19.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
20. 20.🔮 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
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
22. 22.⚖️ 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
23. 23.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
24. 24.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) vinegar (d) soap solution
25. 25.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
26. 26.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) salt water (d) baking soda water
29. 29.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
32. 32.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
33. 33.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.True or false: curd is an acid. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
36. 36.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
37. 37.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) white paper strips (c) yeast (d) a dropper or spoon
38. 38.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
39. 39.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same

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