Turmeric Indicator Experiment Worksheet

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

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