Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 338 · 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 yeast for the turmeric test? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
3. 3.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
4. 4.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) turmeric powder (c) soap solution (d) water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
8. 8.⚖️ 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
9. 9.⚖️ 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 change it (c) we measure it
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) soap solution (c) plain water (d) vinegar
11. 11.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) an old shirt or apron (d) your best clothes
12. 12.⚖️ 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
13. 13.True or false: plain water is an acid. (a) True (b) False
14. 14.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) yeast (d) water
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) soap solution (d) a battery cell
17. 17.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) reddish-brown (d) green
18. 18.True or false: detergent water is an acid. (a) False (b) True
19. 19.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) sugar water (c) baking soda water (d) detergent water
20. 20.🛟 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
21. 21.True or false: salt water is neutral. (a) True (b) False
22. 22.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) reddish-brown (c) it turns blue (d) it turns green
25. 25.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
26. 26.🫧 Which of these is neutral? (a) tamarind water (b) detergent water (c) curd (d) plain water
27. 27.🔍 Which is the odd one out? (a) tamarind water (b) plain water (c) vinegar (d) detergent water
28. 28.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
29. 29.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) turmeric powder (c) a mirror (d) a battery cell
31. 31.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns blue (c) it turns darker red (d) it turns yellow again
32. 32.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
33. 33.True or false: vinegar is an acid. (a) True (b) False
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) water (d) soap solution
35. 35.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) vinegar (c) detergent water (d) lemon juice
37. 37.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
38. 38.⚖️ 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 colour we see (c) the turmeric paper (d) the light we look in
39. 39.True or false: orange juice is an acid. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True

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