Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 991 · 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.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
2. 2.⚖️ 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 light we look in
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) soap solution (d) yeast
4. 4.True or false: detergent water is neutral. (a) True (b) False
5. 5.True or false: water is not needed for the turmeric test. (a) False (b) True
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
7. 7.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
12. 12.🫧 Which of these is an acid? (a) tamarind water (b) baking soda water (c) sugar water (d) salt water
13. 13.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
14. 14.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns yellow again (c) it disappears (d) it turns darker red
18. 18.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
19. 19.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) sugar water (d) detergent water
20. 20.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
21. 21.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
22. 22.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) plain water (d) detergent water
23. 23.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is magnetic (c) soap is hot (d) soap is an acid
24. 24.🫧 Which of these is neutral? (a) orange juice (b) plain water (c) tamarind water (d) lemon juice
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
26. 26.True or false: orange juice is a base. (a) True (b) False
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
28. 28.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
31. 31.🫧 Which of these is a base? (a) curd (b) baking soda water (c) sugar water (d) tamarind water
32. 32.⚖️ 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
33. 33.True or false: detergent water keeps turmeric yellow. (a) True (b) False
34. 34.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
35. 35.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) soap solution (c) water (d) a mirror
36. 36.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
37. 37.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) baking soda water (d) tamarind water
38. 38.🧺 Which of these is needed for the turmeric test? (a) water (b) a battery cell (c) a balloon (d) a comb
39. 39.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
40. 40.True or false: tamarind water keeps turmeric yellow. (a) False (b) True

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