Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 401 · 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.True or false: detergent water is an acid. (a) True (b) False
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is what we measure. (a) False (b) True
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
4. 4.⚖️ 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 liquid we test (d) the turmeric paper
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
7. 7.True or false: salt water keeps turmeric yellow. (a) True (b) False
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
9. 9.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) tamarind water (c) sugar water (d) baking soda water
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) vinegar (c) lemon juice (d) tamarind water
11. 11.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
12. 12.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) lemon juice (c) a magnet (d) a mirror
13. 13.🫧 Which of these is neutral? (a) vinegar (b) sugar water (c) soap solution (d) orange juice
14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
15. 15.⚖️ 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
16. 16.True or false: yeast is needed for the turmeric test. (a) False (b) True
17. 17.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
18. 18.🧺 Which of these is not needed for the turmeric test? (a) water (b) white paper strips (c) a magnet (d) a dropper or spoon
19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) bright blue (c) reddish-brown (d) it stays white
20. 20.🛟 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
21. 21.True or false: soap solution keeps turmeric yellow. (a) False (b) True
22. 22.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) lemon juice (c) soap solution (d) detergent water
24. 24.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) soap solution (d) vinegar
25. 25.⚖️ 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
26. 26.🧺 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
27. 27.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
28. 28.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
29. 29.True or false: plain water is an acid. (a) True (b) False
30. 30.True or false: water is not needed for the turmeric test. (a) True (b) False
31. 31.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a mirror (c) a battery cell (d) a balloon
32. 32.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) salt water (c) detergent water (d) baking soda water
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) yeast (c) white paper strips (d) a dropper or spoon
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) white paper strips (c) water (d) soap solution
35. 35.🔍 Which is the odd one out? (a) detergent water (b) sugar water (c) lemon juice (d) plain water
36. 36.🫧 Which of these is neutral? (a) soap solution (b) baking soda water (c) lemon juice (d) salt water
37. 37.🧺 Which of these is needed for the turmeric test? (a) a comb (b) yeast (c) a mirror (d) a dropper or spoon
38. 38.True or false: a magnet is needed for the turmeric test. (a) False (b) True
39. 39.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a magnet (c) a balloon (d) soap solution
40. 40.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) salt water

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