Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 978 · 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.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the light we look in (d) the liquid we test
3. 3.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) green (d) reddish
4. 4.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it stays yellow (d) it turns black
6. 6.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
7. 7.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) water (c) a mirror (d) a battery cell
8. 8.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) sugar water (d) soap solution
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
10. 10.🫧 Which of these is an acid? (a) detergent water (b) salt water (c) soap solution (d) curd
11. 11.🫧 Which of these is an acid? (a) baking soda water (b) lemon juice (c) plain water (d) salt water
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) lemon juice (c) white paper strips (d) soap solution
13. 13.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) detergent water
15. 15.True or false: soap solution is an acid. (a) False (b) True
16. 16.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) vinegar (c) soap solution (d) lemon juice
17. 17.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
18. 18.🫧 Which of these is a base? (a) salt water (b) sugar water (c) plain water (d) baking soda water
19. 19.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) white paper strips (d) yeast
20. 20.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) tamarind water (d) soap solution
21. 21.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) soap solution (d) yeast
22. 22.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
23. 23.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) a dropper or spoon (d) water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🫧 Which of these is neutral? (a) plain water (b) orange juice (c) vinegar (d) tamarind water
26. 26.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
27. 27.True or false: a magnet is needed for the turmeric test. (a) True (b) False
28. 28.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) baking soda water (c) plain water (d) salt water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
31. 31.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
32. 32.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
33. 33.True or false: tamarind water is an acid. (a) True (b) False
34. 34.🛟 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
35. 35.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
36. 36.🫧 Which of these is neutral? (a) sugar water (b) baking soda water (c) tamarind water (d) lemon juice
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) white paper strips (d) yeast
38. 38.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
39. 39.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
40. 40.True or false: vinegar keeps turmeric yellow. (a) False (b) True

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