Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 776 · 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.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
2. 2.🫧 Which of these is neutral? (a) salt water (b) detergent water (c) vinegar (d) soap solution
3. 3.True or false: lemon juice is a base. (a) True (b) False
4. 4.⚖️ 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
5. 5.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
6. 6.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
7. 7.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) water (d) a dropper or spoon
10. 10.🍋 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
11. 11.🫧 Which of these is an acid? (a) tamarind water (b) sugar water (c) detergent water (d) salt water
12. 12.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the number of drops
14. 14.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a mirror (d) turmeric powder
16. 16.🫧 Which of these is neutral? (a) soap solution (b) plain water (c) lemon juice (d) orange juice
17. 17.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
18. 18.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) lemon juice (d) yeast
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) salt water (d) soap solution
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) turmeric powder (d) a battery cell
22. 22.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) lemon juice (d) white paper strips
23. 23.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) vinegar
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) baking soda water (d) vinegar
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) water (d) a comb
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
29. 29.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) plain water (c) salt water (d) detergent water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the colour we see
33. 33.True or false: plain water is a base. (a) False (b) True
34. 34.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
35. 35.🛟 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
36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) baking soda water (d) soap solution
37. 37.True or false: vinegar keeps turmeric yellow. (a) True (b) False
38. 38.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a comb (d) a battery cell
39. 39.True or false: water is needed for the turmeric test. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False

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