Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 955 · 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) a comb (b) water (c) turmeric powder (d) a dropper or spoon
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
3. 3.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) lemon juice (c) a battery cell (d) turmeric powder
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
5. 5.🧺 Which of these is not needed for the turmeric test? (a) water (b) a comb (c) white paper strips (d) a dropper or spoon
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
7. 7.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
8. 8.True or false: detergent water is neutral. (a) True (b) False
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
10. 10.🟡 Turmeric paper meets sugar water. What happens? (a) turns reddish-brown (b) stays yellow
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
13. 13.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) sugar water
14. 14.⚖️ 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
15. 15.🔍 Which is the odd one out? (a) salt water (b) detergent water (c) plain water (d) tamarind water
16. 16.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
17. 17.True or false: a magnet is needed for the turmeric test. (a) False (b) True
18. 18.True or false: a comb is needed for the turmeric test. (a) True (b) False
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) baking soda water (c) sugar water (d) lemon juice
20. 20.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) bright blue (d) reddish
21. 21.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) plain water (d) soap solution
22. 22.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) a dropper or spoon (d) white paper strips
24. 24.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
25. 25.🫧 Which of these is an acid? (a) baking soda water (b) sugar water (c) tamarind water (d) plain water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
27. 27.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a pulley (d) a magnet
28. 28.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) tamarind water (d) baking soda water
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
30. 30.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
31. 31.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
32. 32.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the turmeric paper (c) the light we look in (d) the colour we see
34. 34.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) soap solution (d) a mirror
36. 36.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
37. 37.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
38. 38.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) water (d) turmeric powder
40. 40.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown

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