Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 153 · 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 turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
2. 2.⚖️ 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
3. 3.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) lemon juice (c) water (d) yeast
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
5. 5.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the light we look in
7. 7.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
8. 8.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
9. 9.True or false: tamarind water is neutral. (a) True (b) False
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) baking soda water (d) vinegar
11. 11.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
12. 12.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
13. 13.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) vinegar (c) soap solution (d) tamarind water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
16. 16.True or false: curd is an acid. (a) False (b) True
17. 17.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) white paper strips (c) turmeric powder (d) water
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
21. 21.🫧 Which of these is neutral? (a) baking soda water (b) detergent water (c) sugar water (d) curd
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) turmeric powder (d) white paper strips
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a magnet (d) white paper strips
24. 24.True or false: soap solution is needed for the turmeric test. (a) False (b) True
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
26. 26.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a magnet (d) lemon juice
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
28. 28.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
29. 29.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
31. 31.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) a prism (d) an indicator
32. 32.🫧 Which of these is a base? (a) baking soda water (b) vinegar (c) lemon juice (d) curd
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
34. 34.🫧 Which of these is an acid? (a) soap solution (b) lemon juice (c) detergent water (d) plain water
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
36. 36.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) water (d) a comb
38. 38.True or false: vinegar keeps turmeric yellow. (a) True (b) False
39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) turmeric powder (d) yeast
40. 40.🧺 Do we need water for the turmeric test? (a) needed (b) not needed

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