Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 555 · 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.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) a mirror (d) a battery cell
2. 2.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) baking soda water (d) salt water
3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
4. 4.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) yeast (d) turmeric powder
6. 6.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
8. 8.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) soap solution (b) plain water (c) sugar water (d) vinegar
10. 10.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) salt water (d) detergent water
11. 11.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
12. 12.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) vinegar (c) soap solution (d) detergent water
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) a balloon (c) white paper strips (d) soap solution
14. 14.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) sugar water (d) lemon juice
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) an old shirt or apron (d) your school uniform
16. 16.True or false: salt water is a base. (a) False (b) True
17. 17.True or false: detergent water keeps turmeric yellow. (a) False (b) True
18. 18.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the light we look in
20. 20.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the light we look in (d) the liquid we test
22. 22.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) white paper strips (d) a mirror
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: baking soda water is a base. (a) True (b) False
25. 25.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it stays yellow (c) it turns red (d) it turns black
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
28. 28.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
29. 29.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) turmeric powder (c) a balloon (d) a battery cell
30. 30.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
31. 31.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
32. 32.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
33. 33.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) plain water (d) detergent water
34. 34.🫧 Which of these is neutral? (a) tamarind water (b) salt water (c) vinegar (d) lemon juice
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
36. 36.🫧 Which of these is an acid? (a) salt water (b) plain water (c) detergent water (d) orange juice
37. 37.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
38. 38.⚖️ 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
39. 39.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
40. 40.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False

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