Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 882 · 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.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) plain water (c) tamarind water (d) detergent water
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
3. 3.True or false: vinegar turns turmeric reddish-brown. (a) True (b) False
4. 4.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) a mirror (d) water
7. 7.⚖️ 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
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
9. 9.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
10. 10.⚖️ 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
11. 11.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) a comb (d) a mirror
12. 12.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
13. 13.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.⚖️ 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
15. 15.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
16. 16.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is hot (c) soap water is a base (d) soap is magnetic
17. 17.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) mix bathroom cleaners (c) use only kitchen items (d) sip each liquid
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
19. 19.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
20. 20.📘 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
21. 21.🫧 Is curd an acid, a base or neutral? (a) neutral (b) a base (c) an acid
22. 22.🛟 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
23. 23.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
25. 25.🫧 Which of these is a base? (a) sugar water (b) plain water (c) curd (d) detergent water
26. 26.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
27. 27.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
28. 28.True or false: salt water keeps turmeric yellow. (a) True (b) False
29. 29.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
30. 30.🫧 Which of these is a base? (a) salt water (b) orange juice (c) lemon juice (d) baking soda water
31. 31.🔍 Which is the odd one out? (a) salt water (b) plain water (c) tamarind water (d) baking soda water
32. 32.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) a mirror (d) soap solution
33. 33.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
34. 34.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
36. 36.🫧 Which of these is neutral? (a) sugar water (b) orange juice (c) curd (d) baking soda water
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) lemon juice (d) soap solution
39. 39.⚖️ 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 turmeric paper (c) the liquid we test (d) the colour we see
40. 40.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) a balloon (d) a dropper or spoon

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