Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 370 · 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.🍋 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
2. 2.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
3. 3.🟡 Turmeric paper meets salt water. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) white paper strips (d) lemon juice
5. 5.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
6. 6.True or false: a dropper or spoon is needed for the turmeric test. (a) False (b) True
7. 7.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
8. 8.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
9. 9.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
10. 10.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
11. 11.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
12. 12.⚖️ 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 light we look in
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) white paper strips (d) turmeric powder
15. 15.🫧 Which of these is a base? (a) detergent water (b) sugar water (c) salt water (d) lemon juice
16. 16.⚖️ 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
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) lemon juice (c) sugar water (d) soap solution
18. 18.True or false: plain water is an acid. (a) True (b) False
19. 19.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
20. 20.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) soap solution (d) a balloon
21. 21.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
22. 22.🫧 Which of these is neutral? (a) lemon juice (b) baking soda water (c) vinegar (d) sugar water
23. 23.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) a mirror (d) soap solution
25. 25.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
26. 26.⚖️ 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
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the liquid we test (d) the turmeric paper
28. 28.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
29. 29.True or false: vinegar keeps turmeric yellow. (a) False (b) True
30. 30.True or false: sugar water is an acid. (a) True (b) False
31. 31.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your school uniform (d) your best clothes
32. 32.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
33. 33.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
35. 35.🔮 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
36. 36.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a dropper or spoon (c) a magnet (d) yeast
37. 37.True or false: tamarind water is an acid. (a) False (b) True
38. 38.⚖️ 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
39. 39.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a battery cell (d) water
40. 40.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False

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