Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 74 · 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.True or false: a comb is not needed for the turmeric test. (a) False (b) True
2. 2.🫧 Which of these is an acid? (a) curd (b) salt water (c) plain water (d) sugar water
3. 3.⚖️ 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 light we look in
4. 4.True or false: soap solution is a base. (a) False (b) True
5. 5.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) turmeric powder (c) white paper strips (d) lemon juice
7. 7.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
9. 9.⚖️ 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 number of drops (d) the liquid we test
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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
12. 12.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
14. 14.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
15. 15.True or false: salt water keeps turmeric yellow. (a) False (b) True
16. 16.🫧 Which of these is neutral? (a) lemon juice (b) vinegar (c) sugar water (d) detergent water
17. 17.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) detergent water (c) plain water (d) vinegar
19. 19.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the turmeric paper
21. 21.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) tamarind water (d) soap solution
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a balloon (d) a dropper or spoon
23. 23.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
25. 25.⚖️ 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
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
27. 27.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it turns yellow again (d) it disappears
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) soap solution (d) yeast
31. 31.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
32. 32.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
33. 33.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) lemon juice (d) soap solution
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
35. 35.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
36. 36.True or false: water is needed for the turmeric test. (a) True (b) False
37. 37.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
38. 38.🛟 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
39. 39.True or false: tamarind water is a base. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same

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