Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 880 · 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.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
2. 2.True or false: a comb is needed for the turmeric test. (a) True (b) False
3. 3.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
5. 5.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the colour we see (c) the light we look in (d) the liquid we test
7. 7.⚖️ 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
8. 8.True or false: baking soda water is neutral. (a) False (b) True
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) a dropper or spoon (c) water (d) lemon juice
10. 10.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) soap solution (c) vinegar (d) lemon juice
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
13. 13.True or false: water is needed for the turmeric test. (a) False (b) True
14. 14.True or false: detergent water is a base. (a) True (b) False
15. 15.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) vinegar (d) detergent water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
18. 18.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) sugar water (c) soap solution (d) baking soda water
19. 19.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) plain water
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) True (b) False
21. 21.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) turmeric powder (d) a balloon
22. 22.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) an old shirt or apron (d) your best clothes
23. 23.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
24. 24.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
26. 26.🫧 Which of these is neutral? (a) sugar water (b) soap solution (c) orange juice (d) baking soda water
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
28. 28.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a mirror (c) lemon juice (d) yeast
29. 29.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
30. 30.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a battery cell (c) yeast (d) a dropper or spoon
31. 31.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
32. 32.True or false: water is not needed for the turmeric test. (a) False (b) True
33. 33.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns blue (b) it turns red (c) it turns black (d) it stays yellow
34. 34.⚖️ 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
35. 35.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
36. 36.True or false: sugar water keeps turmeric yellow. (a) False (b) True
37. 37.🔍 Which is the odd one out? (a) tamarind water (b) sugar water (c) soap solution (d) plain water
38. 38.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) bright blue (d) it stays white
39. 39.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
40. 40.🫧 Which of these is neutral? (a) orange juice (b) lemon juice (c) salt water (d) vinegar

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