Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 567 · 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? True or false: the liquid we test is the one thing we change. (a) False (b) True
2. 2.⚖️ 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 turmeric paper (d) the colour we see
3. 3.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) tamarind water (d) baking soda water
5. 5.🫧 Which of these is an acid? (a) baking soda water (b) curd (c) detergent water (d) salt water
6. 6.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) white paper strips (d) a balloon
7. 7.🫧 Is plain water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
9. 9.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
10. 10.True or false: soap solution is needed for the turmeric test. (a) False (b) True
11. 11.⚖️ 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 measure it (c) we change it
12. 12.True or false: lemon juice is neutral. (a) True (b) False
13. 13.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
14. 14.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
16. 16.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) white paper strips (d) a comb
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the light we look in (d) the colour we see
21. 21.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
22. 22.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) lemon juice (c) a dropper or spoon (d) turmeric powder
24. 24.True or false: detergent water keeps turmeric yellow. (a) True (b) False
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) lemon juice (d) soap solution
26. 26.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
27. 27.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
28. 28.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a magnet (d) a prism
30. 30.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) a battery cell (d) a dropper or spoon
31. 31.True or false: vinegar keeps turmeric yellow. (a) True (b) False
32. 32.True or false: tamarind water is a base. (a) False (b) True
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) plain water (c) lemon juice (d) salt water
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.True or false: baking soda water is a base. (a) False (b) True
36. 36.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
37. 37.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
38. 38.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
39. 39.🫧 Which of these is neutral? (a) salt water (b) detergent water (c) vinegar (d) tamarind water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it

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