Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 626 · 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) soap solution (b) a mirror (c) a battery cell (d) a balloon
2. 2.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
3. 3.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) vinegar (c) detergent water (d) soap solution
4. 4.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a prism (d) a magnet
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) lemon juice (c) turmeric powder (d) soap solution
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) baking soda water (d) tamarind water
7. 7.⚖️ 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
8. 8.🔮 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
9. 9.🧺 Which of these is needed for the turmeric test? (a) water (b) a battery cell (c) a balloon (d) a comb
10. 10.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a dropper or spoon (d) a battery cell
11. 11.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
12. 12.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a mirror (d) white paper strips
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
16. 16.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
17. 17.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) salt water
18. 18.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
19. 19.⚖️ 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
20. 20.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
21. 21.🫧 Which of these is a base? (a) salt water (b) vinegar (c) baking soda water (d) orange juice
22. 22.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
23. 23.🛟 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
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
25. 25.⚖️ 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
26. 26.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) salt water (d) plain water
27. 27.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
29. 29.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a comb (d) a magnet
30. 30.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
31. 31.True or false: plain water is neutral. (a) True (b) False
32. 32.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) soap solution (d) curd
33. 33.True or false: a comb is needed for the turmeric test. (a) False (b) True
34. 34.⚖️ 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 liquid we test (d) the number of drops
35. 35.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) lemon juice (d) a comb
36. 36.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a magnet (d) water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
40. 40.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid

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