Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 409 · 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 an acid? (a) detergent water (b) lemon juice (c) salt water (d) baking soda water
2. 2.🟡 Which of these keeps turmeric yellow? (a) tamarind water (b) detergent water (c) soap solution (d) baking soda water
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
6. 6.True or false: orange juice is an acid. (a) False (b) True
7. 7.🫧 Which of these is neutral? (a) curd (b) lemon juice (c) vinegar (d) salt water
8. 8.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) sniff each bottle hard (c) use only kitchen items (d) mix bathroom cleaners
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) salt water (c) sugar water (d) detergent water
10. 10.True or false: tamarind water is an acid. (a) False (b) True
11. 11.True or false: vinegar is neutral. (a) True (b) False
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a dropper or spoon (c) yeast (d) water
13. 13.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
14. 14.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
15. 15.🔮 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
16. 16.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
17. 17.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
18. 18.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) white paper strips (d) a balloon
19. 19.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
20. 20.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
21. 21.True or false: detergent water is an acid. (a) True (b) False
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) turmeric powder (d) lemon juice
23. 23.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a magnet (d) soap solution
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the number of drops (c) the colour we see (d) the light we look in
26. 26.⚖️ 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
27. 27.True or false: water is not needed for the turmeric test. (a) True (b) False
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
29. 29.⚖️ 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
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) False (b) True
31. 31.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a mirror (c) a comb (d) turmeric powder
32. 32.🧺 Which of these is needed for the turmeric test? (a) a comb (b) water (c) a battery cell (d) a mirror
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) salt water
36. 36.True or false: soap solution is needed for the turmeric test. (a) False (b) True
37. 37.True or false: baking soda water is neutral. (a) True (b) False
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
39. 39.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
40. 40.🧺 Do we need water for the turmeric test? (a) needed (b) not needed

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