Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 263 · 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.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
3. 3.🫧 Which of these is an acid? (a) vinegar (b) plain water (c) salt water (d) soap solution
4. 4.⚖️ 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
5. 5.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) soap solution (d) lemon juice
6. 6.🛟 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
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) soap solution (d) lemon juice
8. 8.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a battery cell (d) water
10. 10.True or false: salt water keeps turmeric yellow. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
14. 14.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it turns darker red (d) it disappears
15. 15.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
16. 16.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
17. 17.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
18. 18.⚖️ 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 change it (c) we measure it
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 turmeric paper (c) the liquid we test (d) the colour we see
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) lemon juice (d) a magnet
22. 22.True or false: a comb is needed for the turmeric test. (a) True (b) False
23. 23.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) water (c) white paper strips (d) a comb
24. 24.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
25. 25.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
26. 26.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
27. 27.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
29. 29.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) tamarind water (d) vinegar
31. 31.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) curd (d) baking soda water
32. 32.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
34. 34.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
35. 35.🛟 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
36. 36.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
38. 38.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) soap solution (d) a magnet
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True

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