Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 676 · 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.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
2. 2.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) lemon juice (d) baking soda water
3. 3.True or false: a magnet is needed for the turmeric test. (a) False (b) True
4. 4.⚖️ 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
5. 5.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
6. 6.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
7. 7.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) tamarind water (d) vinegar
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the turmeric paper
9. 9.True or false: curd is an acid. (a) False (b) True
10. 10.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) white paper strips (d) a balloon
11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
12. 12.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
13. 13.🔮 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
14. 14.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
15. 15.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.True or false: lemon juice is an acid. (a) False (b) True
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) lemon juice (c) turmeric powder (d) water
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
19. 19.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
20. 20.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
21. 21.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) lemon juice (d) soap solution
23. 23.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.True or false: curd is a base. (a) True (b) False
27. 27.🛟 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
28. 28.⚖️ 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
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) lemon juice (d) turmeric powder
30. 30.True or false: plain water keeps turmeric yellow. (a) True (b) False
31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) soap solution
32. 32.True or false: vinegar is a base. (a) True (b) False
33. 33.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a comb (d) a dropper or spoon
34. 34.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a balloon (c) water (d) lemon juice
35. 35.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
36. 36.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a mirror (d) soap solution
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
40. 40.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) tamarind water (c) sugar water (d) plain water

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