Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 881 · 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 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
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) water (d) a mirror
3. 3.True or false: vinegar is a base. (a) True (b) False
4. 4.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
5. 5.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the liquid we test
7. 7.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
9. 9.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
10. 10.⚖️ 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
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
12. 12.True or false: sugar water is a base. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) soap solution (d) tamarind water
16. 16.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
17. 17.True or false: orange juice is neutral. (a) True (b) False
18. 18.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
19. 19.True or false: curd is a base. (a) False (b) True
20. 20.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) it stays yellow (d) reddish-brown
21. 21.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) soap solution (c) white paper strips (d) water
22. 22.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) white paper strips (d) a battery cell
23. 23.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a magnet (d) a prism
24. 24.True or false: detergent water keeps turmeric yellow. (a) False (b) True
25. 25.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a magnet (d) a comb
26. 26.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
27. 27.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid
28. 28.True or false: soap solution is needed for the turmeric test. (a) True (b) False
29. 29.🫧 Which of these is a base? (a) sugar water (b) tamarind water (c) salt water (d) baking soda water
30. 30.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) detergent water (d) plain water
32. 32.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
33. 33.True or false: vinegar is an acid. (a) True (b) False
34. 34.True or false: plain water keeps turmeric yellow. (a) False (b) True
35. 35.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) a comb (d) a dropper or spoon
36. 36.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
37. 37.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
39. 39.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
40. 40.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution

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