Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 102 · 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 is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
2. 2.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) turmeric powder (d) soap solution
5. 5.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) white paper strips (c) lemon juice (d) water
6. 6.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
7. 7.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the number of drops
9. 9.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
10. 10.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) yeast (d) white paper strips
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) a balloon (d) lemon juice
13. 13.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) sugar water (d) baking soda water
15. 15.⚖️ 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 change it (c) we measure it
16. 16.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) salt water (b) baking soda water (c) vinegar (d) tamarind water
18. 18.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) lemon juice
21. 21.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
22. 22.True or false: water is needed for the turmeric test. (a) False (b) True
23. 23.⚖️ 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
24. 24.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
26. 26.⚖️ 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
27. 27.⚖️ 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
28. 28.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) vinegar
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
30. 30.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) vinegar (d) soap solution
32. 32.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) it stays white (d) reddish-brown
33. 33.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) detergent water (c) vinegar (d) salt water
35. 35.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
37. 37.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
38. 38.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a battery cell (c) yeast (d) a comb
39. 39.True or false: tamarind water turns turmeric reddish-brown. (a) True (b) False
40. 40.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False

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