Turmeric Indicator Experiment Worksheet

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

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