Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 147 · 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 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
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) yeast (c) turmeric powder (d) lemon juice
3. 3.True or false: soap solution is needed for the turmeric test. (a) False (b) True
4. 4.⚖️ 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
5. 5.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
6. 6.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.True or false: salt water is an acid. (a) False (b) True
8. 8.🫧 Which of these is neutral? (a) baking soda water (b) detergent water (c) salt water (d) vinegar
9. 9.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) soap solution (d) a dropper or spoon
11. 11.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.⚖️ 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
13. 13.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) lemon juice (d) vinegar
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? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the colour we see (d) the number of drops
17. 17.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
18. 18.🔍 Which is the odd one out? (a) salt water (b) vinegar (c) baking soda water (d) lemon juice
19. 19.⚖️ 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 liquid we test (d) the colour we see
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
22. 22.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) curd (d) orange juice
23. 23.True or false: plain water turns turmeric reddish-brown. (a) False (b) True
24. 24.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
25. 25.🔮 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
26. 26.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
27. 27.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
28. 28.True or false: detergent water is a base. (a) False (b) True
29. 29.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
30. 30.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a balloon (c) lemon juice (d) white paper strips
33. 33.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) baking soda water (c) soap solution (d) detergent water
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) False (b) True
35. 35.🫧 Which of these is a base? (a) vinegar (b) baking soda water (c) sugar water (d) plain water
36. 36.True or false: sugar water keeps turmeric yellow. (a) True (b) False
37. 37.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) mix bathroom cleaners (d) sip each liquid
38. 38.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a mirror (c) a comb (d) a magnet
39. 39.True or false: water is not needed for the turmeric test. (a) False (b) True
40. 40.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base

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