Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 170 · 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.🛟 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
2. 2.⚖️ 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
3. 3.🔍 Which is the odd one out? (a) tamarind water (b) lemon juice (c) plain water (d) detergent water
4. 4.🧺 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 magnet
5. 5.True or false: orange juice is neutral. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) lemon juice (d) a mirror
8. 8.⚖️ 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 measure it (c) we change it
9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) lemon juice (d) detergent water
11. 11.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
12. 12.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) neutral (c) an acid
13. 13.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) vinegar (d) salt water
15. 15.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
16. 16.🛟 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
17. 17.True or false: a comb is not needed for the turmeric test. (a) False (b) True
18. 18.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.True or false: soap solution is needed for the turmeric test. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a battery cell (d) a dropper or spoon
21. 21.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) reddish-brown (d) it stays white
22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
23. 23.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
24. 24.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) yeast (c) lemon juice (d) a balloon
25. 25.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) plain water (c) sugar water (d) soap solution
26. 26.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) soap solution
27. 27.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) sugar water (d) baking soda water
28. 28.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
30. 30.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
31. 31.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) soap solution (d) detergent water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.True or false: yeast is needed for the turmeric test. (a) False (b) True
34. 34.🫧 Which of these is neutral? (a) baking soda water (b) detergent water (c) curd (d) plain water
35. 35.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
36. 36.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
37. 37.⚖️ 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
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
39. 39.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) soap solution (d) lemon juice
40. 40.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow

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