Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 66 · 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 number of drops”? (a) we change it (b) we measure it (c) we keep it the same
2. 2.🫧 Which of these is a base? (a) curd (b) salt water (c) orange juice (d) baking soda water
3. 3.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) reddish-brown (d) it turns blue
5. 5.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
6. 6.True or false: sugar water is a base. (a) False (b) True
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) vinegar (d) tamarind water
8. 8.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
9. 9.True or false: a comb is not needed for the turmeric test. (a) False (b) True
10. 10.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
11. 11.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) yeast (d) soap solution
12. 12.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the number of drops
14. 14.True or false: plain water keeps turmeric yellow. (a) True (b) False
15. 15.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) soap solution (d) baking soda water
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
17. 17.True or false: a mirror is needed for the turmeric test. (a) False (b) True
18. 18.True or false: water is not needed for the turmeric test. (a) True (b) False
19. 19.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) tamarind water (d) detergent water
21. 21.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
22. 22.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) turmeric powder (d) white paper strips
24. 24.⚖️ 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
25. 25.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
26. 26.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
27. 27.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) it stays white (d) green
29. 29.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
30. 30.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
31. 31.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) turmeric powder (d) a comb
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a balloon (d) soap solution
34. 34.True or false: lemon juice is needed for the turmeric test. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the number of drops
36. 36.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) yeast (d) a dropper or spoon
37. 37.⚖️ 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
38. 38.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns darker red (c) it turns blue (d) it disappears
39. 39.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed

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