Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 678 · 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? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
2. 2.⚖️ 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
3. 3.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a mirror (d) a dropper or spoon
5. 5.True or false: soap solution keeps turmeric yellow. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
7. 7.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) baking soda water (d) vinegar
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
11. 11.True or false: detergent water keeps turmeric yellow. (a) True (b) False
12. 12.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
13. 13.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) soap solution (c) lemon juice (d) salt water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
16. 16.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
17. 17.⚖️ 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 light we look in
18. 18.⚖️ 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
19. 19.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
20. 20.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) white paper strips (c) a dropper or spoon (d) soap solution
21. 21.True or false: baking soda water is neutral. (a) False (b) True
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a balloon (d) a dropper or spoon
23. 23.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
25. 25.True or false: curd is neutral. (a) True (b) False
26. 26.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
27. 27.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (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 stays yellow (d) it turns blue
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) turmeric powder (d) yeast
32. 32.True or false: soap solution is an acid. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) a magnet (d) soap solution
34. 34.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
35. 35.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) soap solution (d) baking soda water
36. 36.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
37. 37.True or false: soap solution is a base. (a) False (b) True
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
39. 39.True or false: detergent water is a base. (a) True (b) False
40. 40.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed

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