Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 436 · 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: a mirror is needed for the turmeric test. (a) True (b) False
2. 2.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) white paper strips (d) a battery cell
3. 3.True or false: water is needed for the turmeric test. (a) True (b) False
4. 4.⚖️ 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
5. 5.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
6. 6.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
7. 7.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns darker red (d) it turns blue
8. 8.True or false: soap solution keeps turmeric yellow. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the light we look in (c) the colour we see (d) the turmeric paper
10. 10.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
11. 11.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
12. 12.🔮 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
13. 13.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
15. 15.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
16. 16.🫧 Which of these is neutral? (a) tamarind water (b) vinegar (c) plain water (d) lemon juice
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
19. 19.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
20. 20.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) white paper strips (d) a battery cell
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
23. 23.True or false: a comb is not needed for the turmeric test. (a) False (b) True
24. 24.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a balloon (d) a dropper or spoon
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) a dropper or spoon (d) turmeric powder
27. 27.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) salt water (d) plain water
30. 30.True or false: salt water is an acid. (a) True (b) False
31. 31.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
32. 32.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
33. 33.True or false: tamarind water is an acid. (a) True (b) False
34. 34.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a comb (c) lemon juice (d) a dropper or spoon
35. 35.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
36. 36.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) turmeric powder (d) yeast
37. 37.🫧 Which of these is a base? (a) lemon juice (b) salt water (c) orange juice (d) detergent water
38. 38.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) turmeric powder (d) a magnet
39. 39.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) sugar water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False

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