Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 999 · 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) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the colour we see (d) the liquid we test
3. 3.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
4. 4.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) lemon juice (d) tamarind water
5. 5.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) sugar water (d) soap solution
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
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.⚖️ 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
9. 9.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
10. 10.⚖️ 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 measure it (c) we change it
11. 11.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
13. 13.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
14. 14.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a balloon (d) white paper strips
15. 15.⚖️ 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
16. 16.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) lemon juice (d) vinegar
17. 17.True or false: lemon juice is a base. (a) False (b) True
18. 18.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
19. 19.🧺 Which of these is needed for the turmeric test? (a) lemon juice (b) a balloon (c) a magnet (d) a comb
20. 20.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns red (d) it turns blue
22. 22.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
24. 24.True or false: a comb is not needed for the turmeric test. (a) True (b) False
25. 25.🔍 Which is the odd one out? (a) baking soda water (b) tamarind water (c) vinegar (d) plain water
26. 26.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) curd (d) sugar water
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) lemon juice (d) turmeric powder
28. 28.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
29. 29.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
30. 30.True or false: water is not needed for the turmeric test. (a) True (b) False
31. 31.True or false: vinegar is an acid. (a) True (b) False
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
33. 33.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) it stays white (c) green (d) reddish-brown
34. 34.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
35. 35.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
36. 36.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) curd (d) baking soda water
37. 37.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) baking soda water (d) soap solution
38. 38.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
39. 39.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False

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