Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 590 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the turmeric paper
2. 2.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
3. 3.True or false: vinegar is an acid. (a) True (b) False
4. 4.🛟 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
5. 5.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) plain water (c) baking soda water (d) detergent water
6. 6.True or false: a comb is needed for the turmeric test. (a) True (b) False
7. 7.True or false: a mirror is needed for the turmeric test. (a) True (b) False
8. 8.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) turmeric powder (c) a dropper or spoon (d) water
9. 9.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
10. 10.🫧 Which of these is a base? (a) vinegar (b) plain water (c) detergent water (d) sugar water
11. 11.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
12. 12.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) tamarind water (c) detergent water (d) soap solution
13. 13.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
14. 14.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
15. 15.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a dropper or spoon (d) a mirror
17. 17.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🫧 Which of these is a base? (a) sugar water (b) vinegar (c) baking soda water (d) plain water
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
20. 20.True or false: tamarind water is neutral. (a) False (b) True
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a balloon (d) soap solution
22. 22.True or false: lemon juice is an acid. (a) False (b) True
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
25. 25.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) lemon juice (d) vinegar
26. 26.🫧 Which of these is a base? (a) vinegar (b) salt water (c) soap solution (d) tamarind water
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
28. 28.⚖️ 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
29. 29.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
31. 31.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) water (d) yeast
34. 34.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) turmeric powder (d) soap solution
35. 35.⚖️ 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
36. 36.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) lemon juice (d) salt water
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) salt water
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
39. 39.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) white paper strips (c) a comb (d) yeast
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same

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