Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 529 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) a battery cell (d) white paper strips
2. 2.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
3. 3.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
4. 4.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
7. 7.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) soap solution (d) a magnet
9. 9.🫧 Which of these is a base? (a) salt water (b) sugar water (c) orange juice (d) detergent water
10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) lemon juice (d) sugar water
11. 11.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
12. 12.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) yeast (c) water (d) a dropper or spoon
13. 13.True or false: a comb is needed for the turmeric test. (a) True (b) False
14. 14.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
15. 15.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
16. 16.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
17. 17.🫧 Is curd an acid, a base or neutral? (a) a base (b) neutral (c) an acid
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
19. 19.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) a balloon (d) soap solution
20. 20.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
21. 21.🫧 Which of these is an acid? (a) tamarind water (b) detergent water (c) salt water (d) soap solution
22. 22.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
23. 23.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
24. 24.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) lemon juice (d) detergent water
25. 25.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) plain water (d) detergent water
26. 26.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) soap solution (d) vinegar
27. 27.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a magnet (c) soap solution (d) yeast
28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
29. 29.True or false: vinegar is an acid. (a) False (b) True
30. 30.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) tamarind water (d) soap solution
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) vinegar (d) lemon juice
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) turmeric powder (d) white paper strips
33. 33.True or false: vinegar keeps turmeric yellow. (a) False (b) True
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
36. 36.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a battery cell (c) a balloon (d) a mirror
37. 37.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
38. 38.⚖️ 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
39. 39.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) reddish-brown (d) it turns green
40. 40.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed

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