Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 115 · 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? True or false: the light we look in is kept the same. (a) True (b) False
2. 2.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
3. 3.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
5. 5.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it disappears (d) it turns blue
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) turmeric powder (d) yeast
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) a dropper or spoon (d) white paper strips
10. 10.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
11. 11.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the colour we see (c) the number of drops (d) the liquid we test
13. 13.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.⚖️ 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 measure it (c) we change it
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
16. 16.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
17. 17.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
18. 18.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
19. 19.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
20. 20.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
21. 21.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) plain water (d) vinegar
22. 22.🫧 Which of these is neutral? (a) salt water (b) baking soda water (c) curd (d) orange juice
23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
24. 24.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a magnet (d) a dropper or spoon
26. 26.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) white paper strips (c) yeast (d) a battery cell
27. 27.True or false: a comb is not needed for the turmeric test. (a) True (b) False
28. 28.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
29. 29.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) detergent water (d) lemon juice
30. 30.True or false: lemon juice is neutral. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
33. 33.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
34. 34.True or false: tamarind water is a base. (a) False (b) True
35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) a magnet (d) an indicator
36. 36.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the colour we see (d) the liquid we test
38. 38.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) a magnet (d) turmeric powder
39. 39.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) tamarind water
40. 40.🔮 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

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