Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 157 · 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.True or false: detergent water is an acid. (a) True (b) False
2. 2.True or false: vinegar is a base. (a) True (b) False
3. 3.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) salt water (b) plain water (c) lemon juice (d) baking soda water
6. 6.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the number of drops (d) the light we look in
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
12. 12.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
13. 13.True or false: orange juice is a base. (a) True (b) False
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) white paper strips (d) a dropper or spoon
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) tamarind water (c) sugar water (d) vinegar
16. 16.⚖️ 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
17. 17.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
18. 18.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
19. 19.🔮 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
20. 20.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) detergent water (d) baking soda water
21. 21.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
22. 22.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a magnet (c) a balloon (d) a battery cell
24. 24.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
25. 25.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) a mirror (d) a comb
26. 26.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) plain water
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 light we look in (c) the liquid we test
28. 28.True or false: water is needed for the turmeric test. (a) False (b) True
29. 29.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap water is a base (c) soap is magnetic (d) soap is an acid
30. 30.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
31. 31.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
33. 33.🫧 Which of these is neutral? (a) soap solution (b) salt water (c) vinegar (d) tamarind water
34. 34.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) turmeric powder (d) a dropper or spoon
37. 37.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
38. 38.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) yeast (c) lemon juice (d) water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the number of drops
40. 40.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) water (c) turmeric powder (d) a dropper or spoon

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