Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 644 · 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.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) a white party dress (c) your best clothes (d) your school uniform
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) yeast (d) a dropper or spoon
3. 3.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
4. 4.🟡 Which of these turns turmeric paper reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) sugar water
5. 5.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the light we look in (d) the turmeric paper
7. 7.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🟡 Which of these keeps turmeric yellow? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
9. 9.True or false: plain water keeps turmeric yellow. (a) False (b) True
10. 10.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
11. 11.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) detergent water (d) baking soda water
12. 12.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
13. 13.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
14. 14.🫧 Which of these is a base? (a) detergent water (b) lemon juice (c) vinegar (d) tamarind water
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) detergent water (c) plain water (d) sugar water
16. 16.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a battery cell (c) turmeric powder (d) yeast
17. 17.True or false: detergent water is a base. (a) True (b) False
18. 18.⚖️ 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
19. 19.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True
20. 20.True or false: a comb is needed for the turmeric test. (a) True (b) False
21. 21.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) white paper strips (d) water
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a balloon (d) soap solution
25. 25.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
26. 26.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns black (c) it turns red (d) it stays yellow
27. 27.🟡 Turmeric paper meets vinegar. What happens? (a) stays yellow (b) turns reddish-brown
28. 28.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
29. 29.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
30. 30.True or false: soap solution is needed for the turmeric test. (a) False (b) True
31. 31.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
32. 32.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) water (d) yeast
33. 33.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
34. 34.🧺 Which of these is not needed for the turmeric test? (a) water (b) a mirror (c) lemon juice (d) soap solution
35. 35.True or false: orange juice is an acid. (a) False (b) True
36. 36.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) white at once (d) reddish
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the liquid we test
38. 38.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a dropper or spoon (c) a battery cell (d) water
39. 39.True or false: a mirror is needed for the turmeric test. (a) True (b) False
40. 40.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) an acid (c) neutral

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