Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 399 · 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 turns turmeric reddish-brown? (a) vinegar (b) detergent water (c) salt water (d) sugar water
2. 2.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
3. 3.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) water (c) yeast (d) turmeric powder
4. 4.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
5. 5.True or false: vinegar is an acid. (a) True (b) False
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) turmeric powder (c) a balloon (d) white paper strips
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the colour we see (d) the liquid we test
8. 8.⚖️ 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 number of drops (c) the light we look in (d) the turmeric paper
9. 9.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a mirror (c) a dropper or spoon (d) soap solution
10. 10.True or false: a comb is not needed for the turmeric test. (a) False (b) True
11. 11.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) lemon juice (d) a magnet
12. 12.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🔍 Which is the odd one out? (a) sugar water (b) vinegar (c) detergent water (d) plain water
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
16. 16.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
17. 17.⚖️ 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
18. 18.True or false: detergent water keeps turmeric yellow. (a) False (b) True
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it turns red (c) it stays yellow (d) it turns blue
20. 20.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) detergent water (d) baking soda water
21. 21.True or false: orange juice is a base. (a) False (b) True
22. 22.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
23. 23.🫧 Which of these is neutral? (a) lemon juice (b) tamarind water (c) plain water (d) vinegar
24. 24.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) a white party dress (c) your best clothes (d) an old shirt or apron
25. 25.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🛟 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
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.True or false: lemon juice is an acid. (a) False (b) True
29. 29.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
30. 30.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
31. 31.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) False (b) True
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a comb (d) lemon juice
34. 34.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
35. 35.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
36. 36.⚖️ 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
37. 37.⚖️ 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
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
39. 39.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) a battery cell (d) water
40. 40.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a dropper or spoon (d) white paper strips

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