Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 877 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) soap solution (c) white paper strips (d) water
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
4. 4.True or false: curd is an acid. (a) True (b) False
5. 5.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) a dropper or spoon (c) lemon juice (d) turmeric powder
8. 8.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a comb (c) soap solution (d) yeast
9. 9.🔍 Which is the odd one out? (a) soap solution (b) vinegar (c) sugar water (d) lemon juice
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) baking soda water (c) salt water (d) tamarind water
11. 11.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) tamarind water (c) detergent water (d) lemon juice
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) water (d) lemon juice
13. 13.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) sugar water (c) lemon juice (d) salt water
14. 14.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
15. 15.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
16. 16.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is an acid (c) soap water is a base (d) soap is hot
18. 18.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
19. 19.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) soap solution (d) detergent water
20. 20.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) detergent water (d) tamarind water
21. 21.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
22. 22.True or false: vinegar is an acid. (a) False (b) True
23. 23.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a pulley (d) a magnet
24. 24.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) water (c) lemon juice (d) a comb
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
26. 26.⚖️ 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
27. 27.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
28. 28.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
29. 29.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
30. 30.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) a balloon (d) white paper strips
31. 31.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.True or false: yeast is needed for the turmeric test. (a) False (b) True
33. 33.True or false: a balloon is needed for the turmeric test. (a) True (b) False
34. 34.⚖️ 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 liquid we test (d) the colour we see
35. 35.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) water (c) lemon juice (d) turmeric powder
37. 37.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
38. 38.True or false: salt water is neutral. (a) False (b) True
39. 39.🫧 Which of these is neutral? (a) soap solution (b) tamarind water (c) baking soda water (d) sugar water
40. 40.🔍 Which is the odd one out? (a) tamarind water (b) detergent water (c) baking soda water (d) soap solution

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