Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 939 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a balloon (d) a dropper or spoon
2. 2.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
3. 3.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
4. 4.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
5. 5.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) plain water (d) baking soda water
6. 6.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) water (d) lemon juice
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the number of drops (c) the turmeric paper (d) the liquid we test
9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it stays yellow (d) it turns green
10. 10.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
11. 11.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
12. 12.True or false: plain water is neutral. (a) False (b) True
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.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
16. 16.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) yeast (c) a magnet (d) a battery cell
17. 17.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) a magnet (d) a dropper or spoon
18. 18.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
19. 19.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
20. 20.True or false: orange juice is an acid. (a) False (b) True
21. 21.🫧 Which of these is an acid? (a) salt water (b) detergent water (c) baking soda water (d) orange juice
22. 22.📘 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
23. 23.True or false: water is not needed for the turmeric test. (a) False (b) True
24. 24.🫧 Which of these is neutral? (a) vinegar (b) lemon juice (c) salt water (d) detergent water
25. 25.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
27. 27.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) vinegar (d) soap solution
28. 28.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) a battery cell (d) white paper strips
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) detergent water (d) lemon juice
31. 31.🫧 Which of these is a base? (a) lemon juice (b) soap solution (c) plain water (d) sugar water
32. 32.⚖️ 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
33. 33.True or false: vinegar is a base. (a) True (b) False
34. 34.True or false: soap solution is an acid. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
37. 37.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
38. 38.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) water (d) yeast
40. 40.⚖️ 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

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