Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 386 · 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 neutral? (a) orange juice (b) plain water (c) baking soda water (d) tamarind water
2. 2.🫧 Which of these is an acid? (a) baking soda water (b) detergent water (c) plain water (d) vinegar
3. 3.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) salt water (d) vinegar
4. 4.🫧 Which of these is a base? (a) lemon juice (b) tamarind water (c) plain water (d) baking soda water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
6. 6.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
7. 7.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) turmeric powder (c) lemon juice (d) soap solution
9. 9.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
10. 10.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
12. 12.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
13. 13.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a battery cell (d) soap solution
14. 14.True or false: sugar water keeps turmeric yellow. (a) True (b) False
15. 15.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
16. 16.True or false: vinegar is an acid. (a) True (b) False
17. 17.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
18. 18.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
19. 19.🔮 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
20. 20.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) tamarind water (d) vinegar
21. 21.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🫧 Which of these is an acid? (a) tamarind water (b) plain water (c) soap solution (d) baking soda water
24. 24.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) tamarind water (d) sugar water
26. 26.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
28. 28.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
31. 31.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
32. 32.True or false: detergent water is a base. (a) True (b) False
33. 33.True or false: salt water keeps turmeric yellow. (a) False (b) True
34. 34.True or false: soap solution is an acid. (a) True (b) False
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) yeast (c) white paper strips (d) turmeric powder
36. 36.🧺 Which of these is needed for the turmeric test? (a) a comb (b) white paper strips (c) a balloon (d) a mirror
37. 37.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) lemon juice (d) a magnet
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) a battery cell
40. 40.True or false: vinegar is a base. (a) True (b) False

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