Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 83 · 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 soap solution. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) baking soda water (d) lemon juice
3. 3.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
4. 4.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) soap solution (d) a dropper or spoon
6. 6.🔮 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
7. 7.True or false: soap solution is a base. (a) False (b) True
8. 8.🫧 Which of these is an acid? (a) tamarind water (b) detergent water (c) baking soda water (d) sugar water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the colour we see
10. 10.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
11. 11.⚖️ 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
12. 12.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.⚖️ 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
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) reddish (d) white at once
18. 18.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) lemon juice (d) a balloon
20. 20.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
21. 21.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) detergent water (d) soap solution
22. 22.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) white paper strips (d) a battery cell
24. 24.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) plain water (d) baking soda water
25. 25.⚖️ 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
26. 26.🛟 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
27. 27.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) soap solution (d) sugar water
29. 29.⚖️ 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
30. 30.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
32. 32.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
33. 33.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
34. 34.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) curd (d) salt water
35. 35.⚖️ 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
36. 36.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
37. 37.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
40. 40.🫧 Which of these is a base? (a) sugar water (b) soap solution (c) tamarind water (d) curd

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