Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 959 · 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.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns blue (d) it turns green
2. 2.🫧 Which of these is a base? (a) sugar water (b) vinegar (c) tamarind water (d) soap solution
3. 3.🔮 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
4. 4.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) soap solution (d) vinegar
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) tamarind water (d) soap solution
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) soap solution (d) yeast
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
9. 9.True or false: soap solution is a base. (a) False (b) True
10. 10.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
11. 11.🫧 Which of these is an acid? (a) salt water (b) orange juice (c) soap solution (d) plain water
12. 12.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) plain water (d) detergent water
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
14. 14.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
15. 15.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
16. 16.⚖️ 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
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
18. 18.🫧 Which of these is neutral? (a) plain water (b) orange juice (c) curd (d) tamarind water
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) water (d) white paper strips
21. 21.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
22. 22.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) your school uniform (d) a white party dress
23. 23.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
24. 24.🫧 Which of these is a base? (a) orange juice (b) sugar water (c) vinegar (d) baking soda water
25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) tamarind water (c) soap solution (d) baking soda water
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) water (d) a balloon
27. 27.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
30. 30.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) soap solution (d) a balloon
31. 31.📘 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
32. 32.True or false: orange juice is a base. (a) True (b) False
33. 33.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
34. 34.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
36. 36.True or false: plain water is neutral. (a) False (b) True
37. 37.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
38. 38.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) tamarind water (d) sugar water
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red

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