Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 604 · 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: tamarind water is an acid. (a) False (b) True
2. 2.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your school uniform (d) your best clothes
3. 3.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a magnet (d) a pulley
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) water (c) a dropper or spoon (d) a balloon
5. 5.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
6. 6.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) mix bathroom cleaners (c) sip each liquid (d) sniff each bottle hard
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
8. 8.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
9. 9.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
10. 10.True or false: orange juice is a base. (a) True (b) False
11. 11.True or false: sugar water is a base. (a) True (b) False
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
17. 17.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
18. 18.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
19. 19.⚖️ 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
20. 20.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
21. 21.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) a dropper or spoon (c) a mirror (d) white paper strips
22. 22.True or false: soap solution is a base. (a) False (b) True
23. 23.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
24. 24.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) yeast (c) a magnet (d) lemon juice
25. 25.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) yeast (c) soap solution (d) a battery cell
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
27. 27.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a comb (c) a battery cell (d) a dropper or spoon
29. 29.🫧 Which of these is an acid? (a) baking soda water (b) lemon juice (c) sugar water (d) detergent water
30. 30.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) salt water (c) plain water (d) detergent water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the turmeric paper
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) water (d) a comb
34. 34.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) lemon juice (d) vinegar
35. 35.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) soap solution (c) a battery cell (d) lemon juice
37. 37.True or false: water is needed for the turmeric test. (a) True (b) False
38. 38.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
40. 40.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns darker red (d) it turns blue

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