Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 99 · 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: salt water turns turmeric reddish-brown. (a) False (b) True
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) white paper strips (d) lemon juice
6. 6.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
7. 7.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) salt water (d) soap solution
10. 10.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) white paper strips (d) soap solution
12. 12.True or false: soap solution keeps turmeric yellow. (a) True (b) False
13. 13.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) water
14. 14.True or false: detergent water keeps turmeric yellow. (a) True (b) False
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) plain water (c) soap solution (d) lemon juice
16. 16.True or false: vinegar is an acid. (a) True (b) False
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
18. 18.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
19. 19.True or false: detergent water is a base. (a) False (b) True
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) plain water (c) vinegar (d) tamarind water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the liquid we test
22. 22.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) white paper strips (c) water (d) a magnet
24. 24.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
25. 25.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
26. 26.🔍 Which is the odd one out? (a) sugar water (b) detergent water (c) soap solution (d) baking soda water
27. 27.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the number of drops (c) the turmeric paper (d) the light we look in
29. 29.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
30. 30.True or false: soap solution is needed for the turmeric test. (a) False (b) True
31. 31.True or false: lemon juice is an acid. (a) False (b) True
32. 32.⚖️ 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
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
34. 34.True or false: a comb is not needed for the turmeric test. (a) True (b) False
35. 35.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) mix bathroom cleaners (d) use only kitchen items
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) turmeric powder (d) lemon juice
38. 38.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) a balloon (d) a battery cell
39. 39.🔍 Which is the odd one out? (a) sugar water (b) plain water (c) lemon juice (d) detergent water
40. 40.🫧 Which of these is an acid? (a) orange juice (b) baking soda water (c) salt water (d) plain water

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