Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 749 · 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: sugar water turns turmeric reddish-brown. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) detergent water (d) lemon juice
3. 3.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
4. 4.True or false: lemon juice is neutral. (a) False (b) True
5. 5.True or false: detergent water is an acid. (a) False (b) True
6. 6.True or false: yeast is not needed for the turmeric test. (a) True (b) False
7. 7.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
8. 8.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) soap solution (c) plain water (d) vinegar
9. 9.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
10. 10.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
11. 11.🫧 Which of these is neutral? (a) lemon juice (b) plain water (c) baking soda water (d) soap solution
12. 12.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.True or false: salt water keeps turmeric yellow. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the number of drops
15. 15.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
16. 16.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
18. 18.⚖️ 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
19. 19.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.⚖️ 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
22. 22.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) soap solution (d) lemon juice
23. 23.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
24. 24.🫧 Which of these is neutral? (a) detergent water (b) salt water (c) soap solution (d) tamarind water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
26. 26.⚖️ 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
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
28. 28.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
29. 29.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
30. 30.🫧 Which of these is a base? (a) vinegar (b) salt water (c) baking soda water (d) tamarind water
31. 31.True or false: a magnet is needed for the turmeric test. (a) True (b) False
32. 32.⚖️ 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 turmeric paper (c) the light we look in (d) the liquid we test
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
35. 35.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) tamarind water (c) sugar water (d) detergent water
37. 37.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
38. 38.True or false: a comb is needed for the turmeric test. (a) False (b) True
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) lemon juice (c) sugar water (d) vinegar
40. 40.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice

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