Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 857 · 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 is neutral? (a) soap solution (b) curd (c) salt water (d) lemon juice
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
3. 3.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a prism (d) a pulley
4. 4.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) sniff each bottle hard (d) mix bathroom cleaners
5. 5.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) a magnet (d) soap solution
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
9. 9.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a comb (c) a magnet (d) a balloon
10. 10.🫧 Which of these is neutral? (a) plain water (b) tamarind water (c) lemon juice (d) soap solution
11. 11.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
12. 12.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
13. 13.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap water is a base (d) soap is an acid
14. 14.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) lemon juice (d) white paper strips
15. 15.🧺 Which of these is not needed for the turmeric test? (a) water (b) yeast (c) white paper strips (d) turmeric powder
16. 16.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
17. 17.True or false: a magnet is needed for the turmeric test. (a) True (b) False
18. 18.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) yeast (d) white paper strips
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the light we look in
22. 22.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) lemon juice (d) a balloon
23. 23.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a balloon (d) turmeric powder
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
26. 26.True or false: a balloon is needed for the turmeric test. (a) False (b) True
27. 27.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) turmeric powder (d) a battery cell
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) white paper strips (d) a balloon
30. 30.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a mirror (d) white paper strips
31. 31.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
33. 33.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
36. 36.True or false: sugar water is neutral. (a) False (b) True
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
38. 38.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) soap solution (d) salt water
40. 40.🫧 Which of these is a base? (a) tamarind water (b) soap solution (c) vinegar (d) lemon juice

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