Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 56 · 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.🧺 Which of these is needed for the turmeric test? (a) water (b) a balloon (c) a magnet (d) yeast
2. 2.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a mirror (d) lemon juice
3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it disappears (d) it turns darker red
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
6. 6.⚖️ 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
7. 7.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) plain water (d) lemon juice
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
9. 9.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
11. 11.True or false: plain water is a base. (a) True (b) False
12. 12.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) sugar water (d) lemon juice
13. 13.🔍 Which is the odd one out? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
14. 14.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) a magnet (d) soap solution
15. 15.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
16. 16.True or false: plain water is neutral. (a) False (b) True
17. 17.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) yeast (c) a battery cell (d) a mirror
18. 18.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) yeast (d) a dropper or spoon
21. 21.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
22. 22.True or false: water is needed for the turmeric test. (a) True (b) False
23. 23.True or false: lemon juice is neutral. (a) False (b) True
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) bright blue (c) white at once (d) green
25. 25.🔍 Which is the odd one out? (a) plain water (b) baking soda water (c) salt water (d) vinegar
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a battery cell (d) lemon juice
27. 27.⚖️ 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
28. 28.🧺 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
29. 29.⚖️ 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
30. 30.True or false: vinegar is neutral. (a) True (b) False
31. 31.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
32. 32.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
33. 33.🔮 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
34. 34.🔍 Which is the odd one out? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
35. 35.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
36. 36.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) soap solution (d) water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
40. 40.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution

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