Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 704 · 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? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🫧 Which of these is a base? (a) lemon juice (b) salt water (c) detergent water (d) curd
3. 3.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) lemon juice (d) turmeric powder
4. 4.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
5. 5.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
6. 6.True or false: baking soda water is neutral. (a) True (b) False
7. 7.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) a prism (d) an indicator
8. 8.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
9. 9.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a dropper or spoon (d) yeast
10. 10.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
11. 11.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
12. 12.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
13. 13.🛟 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
14. 14.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True
15. 15.🛟 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
16. 16.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
18. 18.⚖️ 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 light we look in
19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a magnet (d) turmeric powder
20. 20.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
22. 22.True or false: a magnet is needed for the turmeric test. (a) True (b) False
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) yeast (d) turmeric powder
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
25. 25.⚖️ 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
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the liquid we test (c) the colour we see (d) the number of drops
27. 27.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) soap solution (d) sugar water
28. 28.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
29. 29.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) tamarind water (c) soap solution (d) salt water
30. 30.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns black (c) it turns blue (d) it stays yellow
31. 31.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) plain water
32. 32.🧺 Which of these is needed for the turmeric test? (a) water (b) a battery cell (c) a mirror (d) yeast
33. 33.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) tamarind water (d) baking soda water
34. 34.True or false: sugar water is an acid. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
36. 36.True or false: curd is an acid. (a) True (b) False
37. 37.⚖️ 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 change it (c) we measure it
38. 38.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a mirror (d) soap solution
40. 40.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution

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