Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 645 · 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.True or false: soap solution is a base. (a) True (b) False
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) water (c) turmeric powder (d) soap solution
3. 3.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
4. 4.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) water (d) a comb
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) False (b) True
6. 6.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) detergent water (c) soap solution (d) baking soda water
7. 7.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the colour we see
9. 9.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
10. 10.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
11. 11.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) soap solution (d) a comb
12. 12.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
13. 13.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
14. 14.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
15. 15.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) turmeric powder (d) white paper strips
17. 17.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a battery cell (d) water
18. 18.⚖️ 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 turmeric paper
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a comb (c) lemon juice (d) turmeric powder
20. 20.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
21. 21.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
22. 22.⚖️ 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 light we look in
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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
25. 25.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
26. 26.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
27. 27.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns blue (c) it turns red (d) it turns black
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) it stays white (d) bright blue
29. 29.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) mix bathroom cleaners (d) sniff each bottle hard
30. 30.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
31. 31.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) True (b) False
33. 33.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
34. 34.🫧 Which of these is a base? (a) plain water (b) salt water (c) tamarind water (d) baking soda water
35. 35.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
36. 36.⚖️ 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
37. 37.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
38. 38.True or false: water is not needed for the turmeric test. (a) False (b) True
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
40. 40.⚖️ 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 measure it (c) we change it

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