Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 250 · 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 detergent water. What happens? (a) stays yellow (b) turns reddish-brown
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) water (d) soap solution
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.True or false: lemon juice is a base. (a) False (b) True
5. 5.📘 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
6. 6.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
7. 7.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) yeast (d) a comb
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
10. 10.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
11. 11.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a balloon (c) soap solution (d) a dropper or spoon
12. 12.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
13. 13.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
14. 14.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it stays yellow (d) it turns blue
15. 15.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) lemon juice (d) soap solution
16. 16.⚖️ 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
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
18. 18.True or false: lemon juice is an acid. (a) False (b) True
19. 19.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
20. 20.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) tamarind water (d) baking soda water
21. 21.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
22. 22.⚖️ 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
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.True or false: soap solution is needed for the turmeric test. (a) False (b) True
25. 25.True or false: lemon juice is neutral. (a) False (b) True
26. 26.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
27. 27.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
28. 28.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) soap solution (d) yeast
30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) turmeric powder (d) a battery cell
31. 31.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
32. 32.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) white paper strips (d) yeast
34. 34.⚖️ 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
35. 35.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
36. 36.🫧 Which of these is an acid? (a) detergent water (b) baking soda water (c) plain water (d) curd
37. 37.⚖️ 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
38. 38.True or false: sugar water keeps turmeric yellow. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the light we look in (d) the liquid we test
40. 40.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) detergent water (d) tamarind water

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