Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 706 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) it stays yellow (d) reddish-brown
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
3. 3.True or false: soap solution is a base. (a) True (b) False
4. 4.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
5. 5.⚖️ 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
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) white paper strips (d) lemon juice
7. 7.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
8. 8.⚖️ 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 liquid we test (c) the turmeric paper (d) the number of drops
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) soap solution (d) white paper strips
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) plain water (d) sugar water
11. 11.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
12. 12.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a dropper or spoon (d) soap solution
13. 13.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
14. 14.🫧 Which of these is an acid? (a) plain water (b) salt water (c) lemon juice (d) detergent water
15. 15.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
16. 16.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
17. 17.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
18. 18.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
19. 19.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
20. 20.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
21. 21.True or false: yeast is not needed for the turmeric test. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
23. 23.🛟 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
24. 24.🫧 Which of these is neutral? (a) lemon juice (b) sugar water (c) soap solution (d) detergent water
25. 25.True or false: orange juice is a base. (a) True (b) False
26. 26.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
27. 27.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
28. 28.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
29. 29.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) vinegar (d) baking soda water
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) white paper strips (d) a magnet
31. 31.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
32. 32.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a balloon (d) turmeric powder
33. 33.⚖️ 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
34. 34.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) water (d) a battery cell
35. 35.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
36. 36.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
37. 37.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) detergent water (d) soap solution
38. 38.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.⚖️ 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
40. 40.⚖️ 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 turmeric paper (d) the number of drops

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