Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 625 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) turmeric powder (d) water
2. 2.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.⚖️ 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
4. 4.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a balloon (d) lemon juice
5. 5.⚖️ 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
6. 6.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) sugar water (c) salt water (d) soap solution
7. 7.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
8. 8.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
9. 9.⚖️ 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
10. 10.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) a pulley (d) an indicator
11. 11.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
12. 12.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a dropper or spoon (d) a magnet
14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
15. 15.🫧 Which of these is a base? (a) soap solution (b) vinegar (c) curd (d) orange juice
16. 16.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) white paper strips (c) water (d) yeast
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) bright blue (d) green
18. 18.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) sugar water (d) detergent water
19. 19.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) a white party dress (d) your best clothes
20. 20.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) sugar water (c) vinegar (d) detergent water
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
22. 22.True or false: soap solution is needed for the turmeric test. (a) False (b) True
23. 23.⚖️ 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
24. 24.🫧 Which of these is a base? (a) curd (b) plain water (c) detergent water (d) lemon juice
25. 25.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) a balloon (d) white paper strips
26. 26.🟡 Why does soap solution change turmeric’s colour? (a) soap is hot (b) soap is magnetic (c) soap is an acid (d) soap water is a base
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the light we look in
28. 28.True or false: tamarind water is a base. (a) True (b) False
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
32. 32.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) soap solution (d) a balloon
35. 35.True or false: a mirror is needed for the turmeric test. (a) True (b) False
36. 36.🫧 Which of these is neutral? (a) lemon juice (b) soap solution (c) curd (d) plain water
37. 37.True or false: soap solution keeps turmeric yellow. (a) False (b) True
38. 38.True or false: baking soda water turns turmeric reddish-brown. (a) True (b) False
39. 39.🔍 Which is the odd one out? (a) vinegar (b) sugar water (c) soap solution (d) tamarind water
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see

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