Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 813 · 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 stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
2. 2.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
4. 4.True or false: a balloon is needed for the turmeric test. (a) False (b) True
5. 5.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) vinegar (d) lemon juice
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) white paper strips (c) soap solution (d) water
7. 7.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
8. 8.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
9. 9.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
10. 10.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
12. 12.True or false: lemon juice is a base. (a) False (b) True
13. 13.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
15. 15.🫧 Which of these is neutral? (a) curd (b) tamarind water (c) vinegar (d) plain water
16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) white paper strips (d) water
17. 17.🫧 Which of these is neutral? (a) baking soda water (b) salt water (c) vinegar (d) lemon juice
18. 18.⚖️ 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
19. 19.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns yellow again (d) it turns darker red
20. 20.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
24. 24.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.⚖️ 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
26. 26.🫧 Which of these is neutral? (a) tamarind water (b) sugar water (c) baking soda water (d) orange juice
27. 27.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) white paper strips (d) a comb
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) white paper strips (c) soap solution (d) turmeric powder
29. 29.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
30. 30.🛟 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
31. 31.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
32. 32.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) plain water (d) baking soda water
34. 34.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) soap solution (d) tamarind water
36. 36.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
37. 37.🫧 Which of these is an acid? (a) sugar water (b) orange juice (c) detergent water (d) soap solution
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a comb (d) a dropper or spoon
39. 39.True or false: salt water is an acid. (a) True (b) False
40. 40.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow

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