Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 545 · 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 soap solution for the turmeric test? (a) not needed (b) needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the number of drops (d) the turmeric paper
3. 3.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a balloon (d) lemon juice
4. 4.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a dropper or spoon (d) a battery cell
6. 6.⚖️ 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
7. 7.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
9. 9.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
10. 10.True or false: soap solution is a base. (a) True (b) False
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) a comb (d) white paper strips
13. 13.🫧 Which of these is neutral? (a) orange juice (b) plain water (c) baking soda water (d) detergent water
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) water (d) soap solution
15. 15.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
16. 16.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) lemon juice (d) baking soda water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
18. 18.True or false: plain water is an acid. (a) False (b) True
19. 19.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) plain water (d) baking soda water
21. 21.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the colour we see
23. 23.True or false: a balloon is needed for the turmeric test. (a) False (b) True
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
25. 25.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) white paper strips (d) a balloon
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) lemon juice (d) turmeric powder
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.True or false: plain water keeps turmeric yellow. (a) True (b) False
30. 30.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
31. 31.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
32. 32.⚖️ 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
33. 33.⚖️ 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
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) yeast (c) turmeric powder (d) 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) vinegar (b) soap solution (c) orange juice (d) salt water
37. 37.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
38. 38.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
39. 39.True or false: salt water is an acid. (a) False (b) True
40. 40.True or false: lemon juice is an acid. (a) True (b) False

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