Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 48 · 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 is not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a dropper or spoon (d) white paper strips
2. 2.True or false: sugar water keeps turmeric yellow. (a) True (b) False
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) turmeric powder (d) white paper strips
4. 4.🫧 Which of these is a base? (a) lemon juice (b) soap solution (c) plain water (d) curd
5. 5.True or false: detergent water is neutral. (a) False (b) True
6. 6.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
7. 7.True or false: soap solution is needed for the turmeric test. (a) True (b) False
8. 8.🫧 Which of these is a base? (a) detergent water (b) vinegar (c) sugar water (d) salt water
9. 9.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) a comb (d) water
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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
12. 12.🫧 Which of these is an acid? (a) detergent water (b) vinegar (c) baking soda water (d) plain water
13. 13.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) vinegar (d) curd
14. 14.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
15. 15.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a comb (c) white paper strips (d) turmeric powder
17. 17.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
18. 18.True or false: a mirror is needed for the turmeric test. (a) True (b) False
19. 19.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
21. 21.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
24. 24.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
25. 25.True or false: a comb is not needed for the turmeric test. (a) False (b) True
26. 26.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) white paper strips (d) soap solution
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
30. 30.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
32. 32.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a mirror (c) white paper strips (d) water
34. 34.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
35. 35.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
36. 36.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) tamarind water (c) sugar water (d) salt water
38. 38.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
39. 39.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
40. 40.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a battery cell (d) a mirror

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