Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 793 · 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 is the odd one out? (a) detergent water (b) sugar water (c) salt water (d) lemon juice
2. 2.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
3. 3.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) a balloon (d) lemon juice
4. 4.📘 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
5. 5.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a battery cell (d) turmeric powder
7. 7.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a mirror (d) a magnet
9. 9.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) a mirror (d) white paper strips
10. 10.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
11. 11.🫧 Which of these is neutral? (a) detergent water (b) orange juice (c) curd (d) plain water
12. 12.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
15. 15.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
16. 16.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
17. 17.True or false: tamarind water is an acid. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) salt water (d) lemon juice
19. 19.⚖️ 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 measure it (c) we change it
20. 20.🛟 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
21. 21.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
23. 23.True or false: lemon juice is a base. (a) False (b) True
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a battery cell
25. 25.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
27. 27.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
28. 28.True or false: curd is a base. (a) False (b) True
29. 29.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
31. 31.⚖️ 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 number of drops (d) the light we look in
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.True or false: water is not needed for the turmeric test. (a) False (b) True
34. 34.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a mirror (c) a battery cell (d) yeast
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
36. 36.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) vinegar (d) baking soda water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
38. 38.True or false: sugar water keeps turmeric yellow. (a) True (b) False
39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) a magnet (d) a balloon
40. 40.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water

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