Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 273 · 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 of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
2. 2.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
3. 3.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
5. 5.🧺 Which of these is needed for the turmeric test? (a) a comb (b) turmeric powder (c) a mirror (d) a battery cell
6. 6.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
7. 7.True or false: lemon juice is an acid. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the turmeric paper
9. 9.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) vinegar (d) detergent water
10. 10.🛟 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
11. 11.⚖️ 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
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a magnet (c) turmeric powder (d) soap solution
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
14. 14.⚖️ 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 light we look in (c) the turmeric paper (d) the colour we see
15. 15.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
17. 17.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) soap solution (d) tamarind water
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) lemon juice (c) turmeric powder (d) white paper strips
19. 19.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a balloon (d) white paper strips
20. 20.⚖️ 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
21. 21.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it disappears (c) it turns darker red (d) it turns blue
22. 22.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
23. 23.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
24. 24.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) a mirror (d) a comb
25. 25.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
26. 26.🫧 Which of these is neutral? (a) detergent water (b) vinegar (c) baking soda water (d) sugar water
27. 27.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) a balloon
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the colour we see (c) the liquid we test
31. 31.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
32. 32.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) soap solution (d) lemon juice
33. 33.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap water is a base (c) soap is an acid (d) soap is hot
34. 34.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
35. 35.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
36. 36.🫧 Which of these is a base? (a) baking soda water (b) orange juice (c) tamarind water (d) lemon juice
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns blue (c) it turns green (d) reddish-brown
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) a dropper or spoon (d) soap solution
40. 40.True or false: tamarind water is a base. (a) False (b) True

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