Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 109 · 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) soap solution (b) vinegar (c) baking soda water (d) detergent water
2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
3. 3.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) soap solution (c) baking soda water (d) detergent water
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
5. 5.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a battery cell (c) soap solution (d) water
6. 6.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a battery cell (d) white paper strips
8. 8.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
9. 9.🛟 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
10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
12. 12.🫧 Which of these is an acid? (a) detergent water (b) soap solution (c) curd (d) plain water
13. 13.⚖️ 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
14. 14.🫧 Which of these is neutral? (a) curd (b) sugar water (c) lemon juice (d) orange juice
15. 15.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
16. 16.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
17. 17.True or false: orange juice is neutral. (a) False (b) True
18. 18.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
21. 21.⚖️ 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 light we look in (d) the colour we see
22. 22.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
23. 23.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
24. 24.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) turmeric powder (c) soap solution (d) white paper strips
26. 26.True or false: curd is neutral. (a) False (b) True
27. 27.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
29. 29.True or false: a comb is needed for the turmeric test. (a) True (b) False
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the number of drops
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a comb (d) turmeric powder
34. 34.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
35. 35.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) white paper strips (d) a dropper or spoon
36. 36.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a comb (d) soap solution
37. 37.True or false: detergent water is an acid. (a) False (b) True
38. 38.🧺 Which of these is needed for the turmeric test? (a) water (b) yeast (c) a battery cell (d) a comb
39. 39.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) soap solution (d) plain water
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) lemon juice (d) a balloon

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