Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 610 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) lemon juice (d) a balloon
2. 2.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
3. 3.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) vinegar (c) salt water (d) lemon juice
5. 5.True or false: lemon juice is neutral. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
7. 7.🫧 Which of these is an acid? (a) plain water (b) salt water (c) lemon juice (d) soap solution
8. 8.⚖️ 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 light we look in (d) the colour we see
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
10. 10.True or false: vinegar is neutral. (a) True (b) False
11. 11.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
12. 12.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
13. 13.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
14. 14.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) white paper strips (c) a comb (d) a balloon
15. 15.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🫧 Which of these is a base? (a) detergent water (b) curd (c) vinegar (d) orange juice
19. 19.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
20. 20.⚖️ 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
21. 21.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
22. 22.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap is hot (d) soap water is a base
23. 23.⚖️ 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
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
27. 27.True or false: orange juice is a base. (a) False (b) True
28. 28.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
29. 29.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a mirror (d) a dropper or spoon
30. 30.True or false: salt water keeps turmeric yellow. (a) False (b) True
31. 31.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a mirror (c) a battery cell (d) a balloon
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) water (d) a dropper or spoon
33. 33.True or false: soap solution is needed for the turmeric test. (a) True (b) False
34. 34.True or false: a balloon is needed for the turmeric test. (a) False (b) True
35. 35.True or false: a comb is needed for the turmeric test. (a) False (b) True
36. 36.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
37. 37.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns black (d) it turns red
39. 39.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
40. 40.True or false: plain water keeps turmeric yellow. (a) True (b) False

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