Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 908 · 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) water (b) a dropper or spoon (c) a battery cell (d) lemon juice
2. 2.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) lemon juice (d) yeast
3. 3.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
4. 4.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
5. 5.True or false: soap solution is a base. (a) False (b) True
6. 6.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) reddish-brown (d) green
7. 7.True or false: a balloon is needed for the turmeric test. (a) True (b) False
8. 8.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
9. 9.🫧 Which of these is an acid? (a) salt water (b) soap solution (c) detergent water (d) orange juice
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.⚖️ 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
12. 12.🔍 Which is the odd one out? (a) lemon juice (b) tamarind water (c) baking soda water (d) plain water
13. 13.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) baking soda water (d) lemon juice
14. 14.True or false: lemon juice is needed for the turmeric test. (a) False (b) True
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) vinegar (b) sugar water (c) detergent water (d) salt water
16. 16.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
17. 17.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) baking soda water (c) salt water (d) lemon juice
18. 18.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a battery cell (c) a comb (d) a magnet
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the number of drops
20. 20.⚖️ 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 light we look in
21. 21.True or false: soap solution is needed for the turmeric test. (a) False (b) True
22. 22.True or false: curd is an acid. (a) False (b) True
23. 23.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it stays yellow (c) reddish-brown (d) it turns green
24. 24.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) turmeric powder (d) a battery cell
25. 25.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
26. 26.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
27. 27.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the light we look in (d) the turmeric paper
29. 29.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a magnet (c) a comb (d) lemon juice
30. 30.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) water (d) a battery cell
31. 31.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) yeast (c) a comb (d) a mirror
32. 32.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) yeast (c) white paper strips (d) water
33. 33.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) green (d) reddish
37. 37.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
38. 38.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
39. 39.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
40. 40.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) soap solution (c) a battery cell (d) a magnet

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