Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 484 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a magnet (d) turmeric powder
2. 2.True or false: lemon juice is an acid. (a) True (b) False
3. 3.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
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.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a battery cell (d) white paper strips
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) tamarind water
7. 7.⚖️ 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
8. 8.True or false: sugar water keeps turmeric yellow. (a) False (b) True
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
10. 10.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
11. 11.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is hot (d) soap is magnetic
12. 12.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
14. 14.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a magnet (d) a dropper or spoon
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
16. 16.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
17. 17.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) baking soda water (d) detergent water
18. 18.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
19. 19.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
20. 20.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
21. 21.🔮 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) reddish (d) green
22. 22.⚖️ 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
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) soap solution (c) turmeric powder (d) a comb
24. 24.⚖️ 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
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.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
27. 27.🫧 Which of these is a base? (a) salt water (b) orange juice (c) curd (d) baking soda water
28. 28.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) lemon juice (d) a mirror
29. 29.True or false: lemon juice is a base. (a) False (b) True
30. 30.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
31. 31.True or false: water is not needed for the turmeric test. (a) True (b) False
32. 32.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
33. 33.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) plain water (c) vinegar (d) lemon juice
35. 35.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.True or false: soap solution is needed for the turmeric test. (a) True (b) False
37. 37.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
38. 38.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) soap solution (d) a dropper or spoon
40. 40.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution

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