Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 144 · 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.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) baking soda water (d) lemon juice
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a balloon (d) turmeric powder
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) white paper strips (d) lemon juice
4. 4.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
5. 5.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
6. 6.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) turmeric powder (d) soap solution
8. 8.True or false: detergent water keeps turmeric yellow. (a) False (b) True
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) turmeric powder (c) soap solution (d) water
10. 10.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
11. 11.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
12. 12.⚖️ 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 colour we see (c) the light we look in (d) the turmeric paper
13. 13.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
14. 14.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
15. 15.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
16. 16.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
18. 18.🛟 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
19. 19.True or false: plain water is neutral. (a) True (b) False
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) sugar water (c) lemon juice (d) vinegar
21. 21.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) turmeric powder (d) lemon juice
23. 23.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
24. 24.True or false: sugar water is an acid. (a) True (b) False
25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
26. 26.🫧 Which of these is an acid? (a) sugar water (b) baking soda water (c) detergent water (d) tamarind water
27. 27.⚖️ 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
28. 28.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) sugar water (d) soap solution
29. 29.🫧 Which of these is a base? (a) tamarind water (b) orange juice (c) lemon juice (d) detergent water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
32. 32.⚖️ 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
33. 33.True or false: vinegar is an acid. (a) False (b) True
34. 34.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
35. 35.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
36. 36.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
37. 37.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
38. 38.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) lemon juice (d) yeast
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) tamarind water (d) soap solution
40. 40.True or false: a balloon is not needed for the turmeric test. (a) False (b) True

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