Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 266 · 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.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the turmeric paper
3. 3.True or false: sugar water is neutral. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
6. 6.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
7. 7.⚖️ 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
8. 8.🫧 Which of these is an acid? (a) salt water (b) plain water (c) lemon juice (d) sugar water
9. 9.🫧 Which of these is neutral? (a) soap solution (b) lemon juice (c) curd (d) salt water
10. 10.🫧 Which of these is an acid? (a) soap solution (b) tamarind water (c) plain water (d) salt water
11. 11.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.⚖️ 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
14. 14.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) a magnet (d) turmeric powder
15. 15.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) vinegar
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) soap solution (c) water (d) a battery cell
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap is magnetic (d) soap water is a base
18. 18.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
19. 19.⚖️ 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
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) tamarind water (d) detergent water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the turmeric paper
22. 22.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
23. 23.True or false: a comb is needed for the turmeric test. (a) False (b) True
24. 24.🧺 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) yeast
25. 25.🔍 Which is the odd one out? (a) vinegar (b) plain water (c) soap solution (d) sugar water
26. 26.True or false: plain water is an acid. (a) False (b) True
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) a magnet (d) turmeric powder
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a mirror (c) turmeric powder (d) lemon juice
29. 29.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) soap solution (c) baking soda water (d) detergent water
30. 30.True or false: salt water is a base. (a) True (b) False
31. 31.True or false: salt water keeps turmeric yellow. (a) True (b) False
32. 32.True or false: lemon juice is an acid. (a) False (b) True
33. 33.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) lemon juice (d) a comb
34. 34.⚖️ 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
35. 35.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
36. 36.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
37. 37.🛟 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
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
39. 39.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) plain water (d) vinegar
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True

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