Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 333 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a comb (d) turmeric powder
2. 2.🫧 Which of these is an acid? (a) vinegar (b) soap solution (c) baking soda water (d) plain water
3. 3.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.⚖️ 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
5. 5.⚖️ 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 change it (c) we measure it
6. 6.True or false: vinegar keeps turmeric yellow. (a) True (b) False
7. 7.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) soap solution (c) turmeric powder (d) a dropper or spoon
8. 8.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
9. 9.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
10. 10.🫧 Which of these is a base? (a) tamarind water (b) orange juice (c) detergent water (d) vinegar
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
12. 12.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
13. 13.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
14. 14.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
16. 16.🫧 Which of these is a base? (a) tamarind water (b) baking soda water (c) lemon juice (d) plain water
17. 17.🧺 Which of these is not needed for the turmeric test? (a) water (b) a comb (c) soap solution (d) lemon juice
18. 18.🧺 Which of these is not needed for the turmeric test? (a) water (b) turmeric powder (c) yeast (d) lemon juice
19. 19.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
20. 20.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
21. 21.True or false: water is needed for the turmeric test. (a) True (b) False
22. 22.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) water (d) yeast
23. 23.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
25. 25.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) plain water (d) sugar water
26. 26.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
27. 27.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
28. 28.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) lemon juice (d) a battery cell
29. 29.True or false: yeast is needed for the turmeric test. (a) True (b) False
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) soap solution (c) lemon juice (d) water
31. 31.🫧 Which of these is an acid? (a) soap solution (b) orange juice (c) salt water (d) sugar water
32. 32.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
33. 33.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a mirror (d) soap solution
35. 35.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
37. 37.⚖️ 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
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) lemon juice (d) vinegar
40. 40.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) soap solution (d) curd

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