Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 522 · 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? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
4. 4.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) detergent water (d) vinegar
6. 6.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) tamarind water
7. 7.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
8. 8.⚖️ 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
9. 9.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) vinegar (c) soap solution (d) sugar water
11. 11.True or false: lemon juice is an acid. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a comb (d) white paper strips
13. 13.🫧 Which of these is neutral? (a) baking soda water (b) plain water (c) lemon juice (d) detergent water
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
15. 15.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) turmeric powder (d) a balloon
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a battery cell
17. 17.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) a mirror (d) a dropper or spoon
18. 18.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) a dropper or spoon (d) soap solution
20. 20.🫧 Which of these is neutral? (a) baking soda water (b) vinegar (c) orange juice (d) sugar water
21. 21.True or false: soap solution is neutral. (a) True (b) False
22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
23. 23.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) soap solution
24. 24.🫧 Which of these is a base? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
25. 25.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
26. 26.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
27. 27.⚖️ 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 measure it (c) we change it
28. 28.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
29. 29.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
31. 31.True or false: salt water is an acid. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) detergent water (d) soap solution
33. 33.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
35. 35.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is magnetic (d) soap is an acid
36. 36.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) turmeric powder (d) yeast
38. 38.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
39. 39.⚖️ 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
40. 40.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes

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