Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 591 · 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 is the odd one out? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
2. 2.⚖️ 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
3. 3.True or false: lemon juice is neutral. (a) False (b) True
4. 4.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) vinegar (d) sugar water
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
6. 6.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) a magnet (d) white paper strips
8. 8.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) soap solution (d) white paper strips
10. 10.🧺 Which of these is needed for the turmeric test? (a) water (b) a balloon (c) yeast (d) a mirror
11. 11.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) lemon juice (d) a magnet
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a balloon (d) a dropper or spoon
13. 13.⚖️ 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
14. 14.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
15. 15.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
16. 16.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) a comb (d) white paper strips
18. 18.⚖️ 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 turmeric paper
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
20. 20.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) soap solution (d) plain water
21. 21.⚖️ 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
22. 22.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
25. 25.True or false: plain water is neutral. (a) True (b) False
26. 26.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
27. 27.True or false: soap solution is neutral. (a) True (b) False
28. 28.True or false: tamarind water is a base. (a) True (b) False
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a mirror (d) a dropper or spoon
30. 30.🟡 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
31. 31.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
33. 33.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
34. 34.🫧 Which of these is a base? (a) soap solution (b) tamarind water (c) vinegar (d) lemon juice
35. 35.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
36. 36.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) lemon juice (d) a dropper or spoon
37. 37.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) sugar water (d) detergent water
38. 38.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
39. 39.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) detergent water

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