Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 845 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
3. 3.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
4. 4.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
5. 5.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a magnet (d) a prism
6. 6.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
9. 9.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) soap solution (c) vinegar (d) plain water
11. 11.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) curd (d) detergent water
12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) salt water (d) soap solution
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
14. 14.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
15. 15.🔍 Which is the odd one out? (a) salt water (b) plain water (c) tamarind water (d) soap solution
16. 16.⚖️ 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
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
18. 18.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
19. 19.⚖️ 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
20. 20.🫧 Which of these is a base? (a) salt water (b) lemon juice (c) plain water (d) baking soda water
21. 21.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a battery cell (d) lemon juice
22. 22.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) detergent water (d) sugar water
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) a dropper or spoon (d) water
27. 27.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the colour we see
30. 30.⚖️ 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
31. 31.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) green (d) it stays white
32. 32.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) water (d) a magnet
33. 33.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) yeast
35. 35.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) soap solution (c) a balloon (d) a magnet
36. 36.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) water (d) a balloon
38. 38.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) a comb (d) turmeric powder
39. 39.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same

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