Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 344 · 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.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) salt water (d) sugar water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.True or false: soap solution keeps turmeric yellow. (a) False (b) True
7. 7.🔍 Which is the odd one out? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
8. 8.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
11. 11.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
13. 13.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
14. 14.True or false: lemon juice is a base. (a) False (b) True
15. 15.🛟 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
16. 16.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a mirror (d) a balloon
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the light we look in (d) the number of drops
18. 18.⚖️ 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
19. 19.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) vinegar (d) soap solution
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a battery cell (d) water
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) soap solution (d) a mirror
25. 25.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
29. 29.True or false: soap solution is a base. (a) False (b) True
30. 30.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
31. 31.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
35. 35.🟡 Which of these keeps turmeric yellow? (a) salt water (b) soap solution (c) detergent water (d) baking soda water
36. 36.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
37. 37.🫧 Which of these is an acid? (a) plain water (b) baking soda water (c) tamarind water (d) salt water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
39. 39.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
40. 40.⚖️ 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

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