Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 686 · 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 measure it (b) we change it (c) we keep it the same
2. 2.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) lemon juice (d) sugar water
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) lemon juice (d) a magnet
4. 4.🫧 Which of these is neutral? (a) orange juice (b) sugar water (c) detergent water (d) lemon juice
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
6. 6.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) sugar water (d) lemon juice
7. 7.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) yeast (d) white paper strips
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) tamarind water (d) lemon juice
10. 10.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
12. 12.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
13. 13.True or false: detergent water is neutral. (a) True (b) False
14. 14.True or false: sugar water is a base. (a) False (b) True
15. 15.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
16. 16.⚖️ 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
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
18. 18.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
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 colour we see (c) the turmeric paper
20. 20.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) plain water (d) soap solution
21. 21.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.True or false: plain water is a base. (a) True (b) False
23. 23.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
24. 24.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) salt water (d) detergent water
25. 25.True or false: a comb is not needed for the turmeric test. (a) False (b) True
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) salt water
27. 27.True or false: vinegar keeps turmeric yellow. (a) False (b) True
28. 28.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a dropper or spoon (d) a balloon
30. 30.🫧 Which of these is neutral? (a) soap solution (b) salt water (c) vinegar (d) lemon juice
31. 31.⚖️ 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
32. 32.True or false: a mirror is needed for the turmeric test. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) lemon juice (c) turmeric powder (d) a dropper or spoon
34. 34.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
35. 35.🧺 Which of these is not needed for the turmeric test? (a) water (b) lemon juice (c) a battery cell (d) soap solution
36. 36.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) salt water (d) soap solution
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.True or false: sugar water is neutral. (a) False (b) True
39. 39.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
40. 40.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow

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