Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 903 · 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.True or false: sugar water keeps turmeric yellow. (a) True (b) False
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) turmeric powder (d) a magnet
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
5. 5.🛟 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
6. 6.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) white paper strips (c) lemon juice (d) water
7. 7.🔍 Which is the odd one out? (a) plain water (b) sugar water (c) vinegar (d) detergent water
8. 8.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
9. 9.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) soap solution (d) a comb
10. 10.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
11. 11.True or false: tamarind water is a base. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.⚖️ 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
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
16. 16.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
17. 17.🔮 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
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
19. 19.⚖️ 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
20. 20.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.True or false: a magnet is needed for the turmeric test. (a) True (b) False
22. 22.🛟 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
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) soap solution (d) a battery cell
24. 24.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) vinegar (d) soap solution
25. 25.True or false: water is not needed for the turmeric test. (a) False (b) True
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
27. 27.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) water (d) lemon juice
29. 29.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) salt water (d) lemon juice
30. 30.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) a mirror
31. 31.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
32. 32.True or false: soap solution is a base. (a) False (b) True
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) salt water (d) plain water
34. 34.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
35. 35.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) lemon juice (d) a balloon
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) baking soda water (d) lemon juice
37. 37.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
38. 38.True or false: plain water is a base. (a) True (b) False
39. 39.⚖️ 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 number of drops (c) the colour we see (d) the turmeric paper
40. 40.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False

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