Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 732 · 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) baking soda water (b) vinegar (c) sugar water (d) lemon juice
2. 2.⚖️ 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
3. 3.⚖️ 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 colour we see (c) the turmeric paper (d) the liquid we test
4. 4.True or false: vinegar is a base. (a) True (b) False
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
6. 6.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
7. 7.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
8. 8.⚖️ 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
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.True or false: water is needed for the turmeric test. (a) True (b) False
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
12. 12.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) orange juice (d) salt water
13. 13.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
14. 14.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) vinegar (d) plain water
15. 15.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a comb (d) a balloon
17. 17.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
18. 18.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) lemon juice (d) a battery cell
20. 20.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
21. 21.⚖️ 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
22. 22.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) lemon juice (d) a mirror
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) it turns green (d) reddish-brown
25. 25.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
26. 26.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) soap solution (d) baking soda water
27. 27.⚖️ 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
28. 28.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) soap solution (d) tamarind water
29. 29.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) vinegar
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) salt water (c) lemon juice (d) tamarind water
34. 34.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) lemon juice (c) a dropper or spoon (d) white paper strips
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) soap solution (d) lemon juice
36. 36.🫧 Which of these is a base? (a) baking soda water (b) orange juice (c) curd (d) salt water
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) yeast (c) soap solution (d) a dropper or spoon
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
39. 39.True or false: detergent water keeps turmeric yellow. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) detergent water (d) soap solution

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