Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 82 · 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? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
2. 2.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🫧 Which of these is neutral? (a) curd (b) vinegar (c) salt water (d) soap solution
5. 5.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
6. 6.🫧 Which of these is an acid? (a) lemon juice (b) sugar water (c) baking soda water (d) soap solution
7. 7.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) white paper strips (c) turmeric powder (d) lemon juice
8. 8.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
11. 11.🛟 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
12. 12.True or false: salt water is neutral. (a) False (b) True
13. 13.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
14. 14.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
15. 15.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a magnet (d) water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.⚖️ 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
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) plain water (d) baking soda water
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
21. 21.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a comb (c) yeast (d) a balloon
22. 22.True or false: a comb is needed for the turmeric test. (a) False (b) True
23. 23.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
24. 24.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
25. 25.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
26. 26.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the turmeric paper (d) the liquid we test
29. 29.🔍 Which is the odd one out? (a) vinegar (b) tamarind water (c) soap solution (d) salt water
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) detergent water (d) vinegar
31. 31.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
34. 34.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
35. 35.📘 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
36. 36.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) water (d) lemon juice
38. 38.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) soap solution (c) a dropper or spoon (d) water
40. 40.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base

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