Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 225 · 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 paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
2. 2.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.True or false: baking soda water is a base. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
7. 7.⚖️ 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
8. 8.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
9. 9.True or false: sugar water is an acid. (a) True (b) False
10. 10.True or false: soap solution keeps turmeric yellow. (a) False (b) True
11. 11.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
12. 12.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) water (d) a magnet
13. 13.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
14. 14.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) a battery cell (d) soap solution
15. 15.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) lemon juice (d) vinegar
16. 16.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
17. 17.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) turmeric powder (d) a comb
18. 18.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
20. 20.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
21. 21.True or false: soap solution is neutral. (a) False (b) True
22. 22.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) salt water (c) soap solution (d) plain water
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
25. 25.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
26. 26.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
27. 27.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
28. 28.🫧 Which of these is a base? (a) sugar water (b) plain water (c) orange juice (d) soap solution
29. 29.🫧 Which of these is an acid? (a) plain water (b) soap solution (c) detergent water (d) curd
30. 30.🫧 Which of these is a base? (a) detergent water (b) tamarind water (c) orange juice (d) salt water
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) tamarind water (d) salt water
32. 32.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
33. 33.True or false: plain water keeps turmeric yellow. (a) True (b) False
34. 34.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
35. 35.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
36. 36.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
37. 37.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
39. 39.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a balloon (c) soap solution (d) a comb
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) sugar water (d) detergent water

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