Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 249 · 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.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) baking soda water (c) soap solution (d) detergent water
3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
4. 4.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
5. 5.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a battery cell (c) soap solution (d) white paper strips
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
9. 9.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
10. 10.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
11. 11.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) white paper strips (c) turmeric powder (d) yeast
12. 12.True or false: a mirror is needed for the turmeric test. (a) False (b) True
13. 13.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) detergent water (d) soap solution
14. 14.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the turmeric paper (c) the liquid we test
16. 16.True or false: water is not needed for the turmeric test. (a) True (b) False
17. 17.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a battery cell (c) lemon juice (d) turmeric powder
18. 18.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) a prism (d) an indicator
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) white paper strips (d) a balloon
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
21. 21.⚖️ 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
22. 22.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.⚖️ 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
24. 24.True or false: orange juice is a base. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) vinegar (b) soap solution (c) baking soda water (d) detergent water
26. 26.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) turmeric powder (d) a comb
28. 28.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) yeast (c) a balloon (d) a comb
29. 29.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.True or false: vinegar is an acid. (a) True (b) False
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the liquid we test (c) the turmeric paper (d) the colour we see
32. 32.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
33. 33.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
34. 34.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) turmeric powder (c) a comb (d) a mirror
35. 35.⚖️ 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
36. 36.⚖️ 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
37. 37.True or false: lemon juice is an acid. (a) False (b) True
38. 38.🧺 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) soap solution
39. 39.🫧 Which of these is neutral? (a) sugar water (b) detergent water (c) vinegar (d) lemon juice
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True

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