Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 873 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
2. 2.True or false: water is needed for the turmeric test. (a) False (b) True
3. 3.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
4. 4.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a comb (d) white paper strips
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) water (d) a comb
6. 6.⚖️ 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 number of drops
7. 7.⚖️ 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 light we look in
8. 8.True or false: baking soda water is a base. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
10. 10.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
12. 12.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a mirror (d) turmeric powder
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
15. 15.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
17. 17.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
18. 18.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a battery cell (c) a magnet (d) a mirror
19. 19.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) detergent water (d) soap solution
20. 20.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
22. 22.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) soap solution (d) tamarind water
23. 23.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) yeast (d) white paper strips
24. 24.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) yeast (c) water (d) turmeric powder
26. 26.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
28. 28.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
29. 29.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) tamarind water (d) vinegar
30. 30.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
31. 31.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
32. 32.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
33. 33.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
34. 34.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
35. 35.🫧 Which of these is a base? (a) curd (b) salt water (c) soap solution (d) sugar water
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) sugar water (c) vinegar (d) soap solution
37. 37.⚖️ 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
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a balloon (d) soap solution
39. 39.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.⚖️ 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 keep it the same (c) we change it

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