Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 376 · 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.True or false: plain water is neutral. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) salt water
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it turns blue (d) it stays yellow
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
6. 6.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) turmeric powder (d) a magnet
9. 9.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
11. 11.⚖️ 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
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
13. 13.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a mirror
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a balloon (d) white paper strips
16. 16.🫧 Which of these is an acid? (a) curd (b) detergent water (c) salt water (d) baking soda water
17. 17.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) lemon juice (d) detergent water
18. 18.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
19. 19.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
21. 21.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
22. 22.True or false: detergent water keeps turmeric yellow. (a) False (b) True
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) vinegar (d) soap solution
24. 24.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
25. 25.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
26. 26.🫧 Which of these is a base? (a) baking soda water (b) salt water (c) orange juice (d) plain water
27. 27.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
28. 28.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) turmeric powder (c) a battery cell (d) lemon juice
29. 29.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) water (d) a comb
30. 30.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
31. 31.🫧 Which of these is a base? (a) vinegar (b) sugar water (c) plain water (d) detergent water
32. 32.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
34. 34.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
35. 35.True or false: lemon juice is an acid. (a) True (b) False
36. 36.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
39. 39.True or false: soap solution is needed for the turmeric test. (a) False (b) True
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) a comb (d) turmeric powder

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