Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 128 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
2. 2.True or false: detergent water keeps turmeric yellow. (a) True (b) False
3. 3.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🧺 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) lemon juice
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
6. 6.⚖️ 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
7. 7.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) baking soda water (d) sugar water
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
10. 10.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
11. 11.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
12. 12.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) vinegar (d) sugar water
14. 14.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
15. 15.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a magnet (d) white paper strips
16. 16.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
20. 20.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
22. 22.⚖️ 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 light we look in (d) the number of drops
23. 23.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) turmeric powder (d) a comb
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) a magnet (d) turmeric powder
25. 25.🔍 Which is the odd one out? (a) plain water (b) detergent water (c) tamarind water (d) vinegar
26. 26.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
27. 27.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
28. 28.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) a comb (d) white paper strips
29. 29.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
30. 30.True or false: detergent water is a base. (a) False (b) True
31. 31.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) detergent water (d) orange juice
32. 32.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
33. 33.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
34. 34.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a balloon (d) white paper strips
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a comb (d) water
37. 37.⚖️ 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
38. 38.True or false: soap solution is a base. (a) True (b) False
39. 39.🫧 Which of these is an acid? (a) tamarind water (b) salt water (c) plain water (d) detergent water
40. 40.True or false: yeast is needed for the turmeric test. (a) True (b) False

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