Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 614 · 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: soap solution is a base. (a) False (b) True
2. 2.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a magnet (c) white paper strips (d) turmeric powder
3. 3.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
5. 5.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) water (d) a mirror
7. 7.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns darker red (d) it turns blue
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
9. 9.⚖️ 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 colour we see
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
12. 12.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
13. 13.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
14. 14.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) baking soda water (d) detergent water
15. 15.🫧 Which of these is a base? (a) lemon juice (b) detergent water (c) plain water (d) salt water
16. 16.True or false: soap solution is needed for the turmeric test. (a) True (b) False
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) baking soda water (c) lemon juice (d) salt water
18. 18.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
20. 20.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
22. 22.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) salt water (d) vinegar
23. 23.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
24. 24.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
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 colour we see (c) the turmeric paper
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) turmeric powder (d) a balloon
29. 29.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
30. 30.🔮 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
31. 31.True or false: sugar water keeps turmeric yellow. (a) False (b) True
32. 32.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the colour we see (d) the turmeric paper
34. 34.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) salt water (d) plain water
35. 35.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
36. 36.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) tamarind water (d) soap solution
37. 37.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
38. 38.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) water (d) soap solution
40. 40.True or false: vinegar is an acid. (a) False (b) True

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