Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 173 · 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 stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
2. 2.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
4. 4.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) white paper strips (c) lemon juice (d) soap solution
6. 6.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) white paper strips (d) a dropper or spoon
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a mirror (c) turmeric powder (d) a dropper or spoon
9. 9.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) soap solution (d) lemon juice
10. 10.True or false: water is needed for the turmeric test. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) sugar water (d) salt water
12. 12.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
13. 13.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
15. 15.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
16. 16.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) vinegar (d) soap solution
17. 17.True or false: salt water keeps turmeric yellow. (a) False (b) True
18. 18.True or false: detergent water keeps turmeric yellow. (a) True (b) False
19. 19.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) soap solution (d) curd
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a comb (d) white paper strips
21. 21.⚖️ 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 measure it (c) we change it
22. 22.⚖️ 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
23. 23.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
25. 25.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the number of drops
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
29. 29.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
31. 31.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
32. 32.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a balloon (c) yeast (d) a comb
33. 33.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.⚖️ 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
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
37. 37.True or false: a magnet is needed for the turmeric test. (a) False (b) True
38. 38.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic

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