Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 411 · 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.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
2. 2.🔍 Which is the odd one out? (a) tamarind water (b) soap solution (c) vinegar (d) sugar water
3. 3.⚖️ 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
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
6. 6.⚖️ 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
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
8. 8.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
10. 10.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
12. 12.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) a comb (d) a magnet
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
14. 14.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
15. 15.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
16. 16.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
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 turmeric paper (c) the liquid we test
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
20. 20.🍋 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
21. 21.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
22. 22.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) lemon juice (c) detergent water (d) sugar water
24. 24.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the liquid we test
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
27. 27.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
28. 28.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) soap solution (d) turmeric powder
32. 32.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
33. 33.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
35. 35.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
36. 36.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a balloon (c) yeast (d) a mirror
37. 37.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) baking soda water (d) detergent water
38. 38.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) soap solution (d) baking soda water
40. 40.True or false: salt water turns turmeric reddish-brown. (a) False (b) True

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