Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 389 · 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 needed for the turmeric test? (a) a comb (b) a dropper or spoon (c) a battery cell (d) a mirror
2. 2.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) water (c) white paper strips (d) soap solution
5. 5.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
6. 6.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
7. 7.True or false: vinegar is an acid. (a) False (b) True
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) turmeric powder (d) water
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
13. 13.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) salt water (d) lemon juice
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) turmeric powder (c) lemon juice (d) water
15. 15.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
16. 16.True or false: salt water is neutral. (a) True (b) False
17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
18. 18.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) white paper strips (d) a magnet
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a balloon (d) white paper strips
22. 22.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) sugar water (d) lemon juice
23. 23.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
24. 24.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) lemon juice (d) detergent water
27. 27.True or false: sugar water is an acid. (a) True (b) False
28. 28.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
29. 29.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
30. 30.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a battery cell (d) white paper strips
31. 31.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) tamarind water (d) plain water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
33. 33.🫧 Which of these is an acid? (a) salt water (b) plain water (c) sugar water (d) tamarind water
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
36. 36.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) soap solution (c) turmeric powder (d) water
37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
38. 38.🫧 Which of these is a base? (a) soap solution (b) orange juice (c) sugar water (d) lemon juice
39. 39.True or false: water is not needed for the turmeric test. (a) True (b) False
40. 40.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown

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