Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 757 · 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 is the odd one out? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
2. 2.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) tamarind water (d) vinegar
3. 3.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
4. 4.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🫧 Which of these is a base? (a) sugar water (b) soap solution (c) orange juice (d) tamarind water
6. 6.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) lemon juice (d) salt water
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
10. 10.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
11. 11.⚖️ 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
12. 12.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
14. 14.🧺 Do we need a battery cell 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) soap solution (d) a magnet
16. 16.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
17. 17.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) salt water (c) vinegar (d) lemon juice
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) soap solution (d) a magnet
20. 20.True or false: plain water keeps turmeric yellow. (a) False (b) True
21. 21.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
22. 22.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) baking soda water (d) plain water
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) yeast (d) white paper strips
24. 24.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) baking soda water (d) sugar water
26. 26.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
27. 27.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a battery cell (d) soap solution
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) a mirror (d) turmeric powder
30. 30.True or false: yeast is needed for the turmeric test. (a) True (b) False
31. 31.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
34. 34.⚖️ 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 number of drops
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
37. 37.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a comb (c) a dropper or spoon (d) white paper strips
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
39. 39.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
40. 40.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False

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