Turmeric Indicator Experiment Worksheet

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

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