Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 69 · 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: detergent water is an acid. (a) False (b) True
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
3. 3.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
5. 5.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) water (d) turmeric powder
8. 8.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) plain water (d) salt water
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
12. 12.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.True or false: salt water is an acid. (a) True (b) False
14. 14.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
15. 15.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) a dropper or spoon (d) turmeric powder
16. 16.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
17. 17.🛟 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
18. 18.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a magnet (c) soap solution (d) a dropper or spoon
20. 20.🫧 Which of these is an acid? (a) baking soda water (b) soap solution (c) sugar water (d) curd
21. 21.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
22. 22.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
23. 23.🫧 Which of these is an acid? (a) soap solution (b) sugar water (c) tamarind water (d) detergent water
24. 24.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) sugar water (d) salt water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
26. 26.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) white paper strips (d) a battery cell
27. 27.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
29. 29.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) lemon juice
30. 30.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
31. 31.⚖️ 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
32. 32.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a balloon (c) a magnet (d) water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
34. 34.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
37. 37.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
38. 38.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the turmeric paper (d) the liquid we test
40. 40.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow

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