Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 514 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) soap solution (d) turmeric powder
2. 2.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) water (d) a balloon
3. 3.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sniff each bottle hard (d) sip each liquid
4. 4.True or false: plain water is neutral. (a) True (b) False
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
6. 6.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a battery cell (c) yeast (d) a magnet
7. 7.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) a battery cell (d) a dropper or spoon
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
9. 9.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
10. 10.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) tamarind water (d) plain water
12. 12.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
14. 14.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
16. 16.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
17. 17.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) vinegar (d) soap solution
18. 18.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
20. 20.🫧 Which of these is a base? (a) baking soda water (b) curd (c) plain water (d) tamarind water
21. 21.🫧 Which of these is an acid? (a) sugar water (b) orange juice (c) soap solution (d) baking soda water
22. 22.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns blue (d) it turns yellow again
23. 23.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
24. 24.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a dropper or spoon (d) a comb
26. 26.🧺 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) water
27. 27.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
29. 29.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) lemon juice (d) a balloon
30. 30.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a magnet (c) a dropper or spoon (d) soap solution
34. 34.🫧 Which of these is neutral? (a) curd (b) lemon juice (c) plain water (d) detergent water
35. 35.True or false: lemon juice is a base. (a) True (b) False
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) white paper strips (d) turmeric powder
37. 37.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.⚖️ 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 colour we see (c) the liquid we test (d) the turmeric paper
39. 39.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) a balloon (d) a dropper or spoon

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