Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 95 · 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.True or false: plain water keeps turmeric yellow. (a) True (b) False
2. 2.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
4. 4.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) soap solution (d) yeast
5. 5.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
6. 6.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) sip each liquid (d) use only kitchen items
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a dropper or spoon (d) a mirror
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
9. 9.⚖️ 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 measure it (c) we change it
10. 10.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
11. 11.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it turns blue (d) it stays yellow
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) soap solution (d) a battery cell
13. 13.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
14. 14.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) turmeric powder (d) lemon juice
15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
16. 16.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) turmeric powder (d) lemon juice
17. 17.True or false: sugar water keeps turmeric yellow. (a) False (b) True
18. 18.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
19. 19.True or false: lemon juice is an acid. (a) False (b) True
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) lemon juice (d) water
21. 21.🔮 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
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) salt water (c) plain water (d) lemon juice
23. 23.True or false: tamarind water is an acid. (a) False (b) True
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a comb (d) a dropper or spoon
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) green (c) reddish-brown (d) bright blue
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
30. 30.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
31. 31.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) an indicator (d) a pulley
32. 32.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
34. 34.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
35. 35.🔍 Which is the odd one out? (a) baking soda water (b) lemon juice (c) tamarind water (d) plain water
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
37. 37.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) turmeric powder (d) yeast
39. 39.True or false: salt water is neutral. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same

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