Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 725 · 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.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) vinegar (d) baking soda water
2. 2.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a magnet (c) turmeric powder (d) lemon juice
3. 3.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
4. 4.⚖️ 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
5. 5.⚖️ 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
6. 6.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) turmeric powder (d) a mirror
7. 7.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
8. 8.🫧 Which of these is a base? (a) plain water (b) orange juice (c) lemon juice (d) detergent water
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the turmeric paper
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) soap solution (d) white paper strips
13. 13.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) plain water (d) sugar water
15. 15.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
16. 16.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
17. 17.True or false: lemon juice is neutral. (a) True (b) False
18. 18.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
19. 19.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
20. 20.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) it turns blue (d) reddish-brown
22. 22.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
23. 23.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it stays yellow (d) it turns blue
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) white paper strips (d) turmeric powder
25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
26. 26.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) vinegar (d) lemon juice
27. 27.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a comb (d) water
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
29. 29.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
31. 31.⚖️ 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
32. 32.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) turmeric powder (c) white paper strips (d) water
33. 33.🫧 Which of these is neutral? (a) sugar water (b) tamarind water (c) curd (d) vinegar
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
35. 35.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
36. 36.True or false: plain water is an acid. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the colour we see (c) the liquid we test
39. 39.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
40. 40.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid

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