Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 641 · 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 liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
3. 3.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) detergent water (d) baking soda water
4. 4.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
5. 5.🫧 Which of these is neutral? (a) tamarind water (b) curd (c) baking soda water (d) salt water
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.⚖️ 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
8. 8.True or false: soap solution keeps turmeric yellow. (a) True (b) False
9. 9.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) yeast (d) a dropper or spoon
11. 11.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) detergent water (c) sugar water (d) lemon juice
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a magnet (d) turmeric powder
15. 15.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.True or false: sugar water keeps turmeric yellow. (a) False (b) True
17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
18. 18.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) lemon juice (c) a balloon (d) a dropper or spoon
20. 20.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
21. 21.True or false: lemon juice is neutral. (a) True (b) False
22. 22.🫧 Which of these is neutral? (a) vinegar (b) detergent water (c) baking soda water (d) sugar water
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a mirror (d) lemon juice
24. 24.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
25. 25.🫧 Which of these is neutral? (a) plain water (b) curd (c) soap solution (d) lemon juice
26. 26.🫧 Which of these is an acid? (a) salt water (b) sugar water (c) soap solution (d) tamarind water
27. 27.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
28. 28.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) a dropper or spoon (d) water
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) a balloon
31. 31.🫧 Which of these is an acid? (a) plain water (b) vinegar (c) detergent water (d) soap solution
32. 32.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
33. 33.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
35. 35.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
37. 37.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
38. 38.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
40. 40.True or false: vinegar is a base. (a) False (b) True

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