Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 312 · 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.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) white paper strips (c) a magnet (d) water
3. 3.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
4. 4.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
5. 5.🫧 Is curd an acid, a base or neutral? (a) an acid (b) neutral (c) a base
6. 6.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a battery cell (c) soap solution (d) turmeric powder
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
8. 8.True or false: plain water keeps turmeric yellow. (a) True (b) False
9. 9.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
10. 10.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) a battery cell (d) lemon juice
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
13. 13.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
14. 14.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) a dropper or spoon (c) turmeric powder (d) soap solution
15. 15.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
16. 16.🫧 Which of these is a base? (a) curd (b) detergent water (c) salt water (d) plain water
17. 17.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
18. 18.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) soap solution (d) turmeric powder
19. 19.🫧 Which of these is an acid? (a) detergent water (b) tamarind water (c) plain water (d) baking soda water
20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the colour we see (c) the liquid we test
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the light we look in (c) the colour we see (d) the turmeric paper
24. 24.🛟 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
25. 25.⚖️ 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 number of drops (c) the colour we see (d) the light we look in
26. 26.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
27. 27.🫧 Which of these is a base? (a) vinegar (b) soap solution (c) plain water (d) salt water
28. 28.⚖️ 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
29. 29.🫧 Which of these is neutral? (a) vinegar (b) soap solution (c) tamarind water (d) sugar water
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
31. 31.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) a balloon
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
34. 34.🔍 Which is the odd one out? (a) plain water (b) lemon juice (c) sugar water (d) baking soda water
35. 35.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
36. 36.🫧 Which of these is an acid? (a) sugar water (b) salt water (c) detergent water (d) vinegar
37. 37.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
38. 38.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) an indicator (d) a magnet
40. 40.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a battery cell (d) lemon juice

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