Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 451 · 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) a battery cell (b) water (c) turmeric powder (d) lemon juice
2. 2.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
3. 3.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is an acid (c) soap is hot (d) soap is magnetic
4. 4.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
6. 6.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) baking soda water (d) detergent water
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) a dropper or spoon (d) lemon juice
8. 8.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) neutral (c) an acid
9. 9.🫧 Is plain water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
10. 10.⚖️ 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
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the number of drops (b) the liquid we test (c) the colour we see
12. 12.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
13. 13.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) yeast (c) turmeric powder (d) a comb
14. 14.⚖️ 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 measure it (c) we change it
15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
16. 16.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) tamarind water
18. 18.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
19. 19.True or false: plain water keeps turmeric yellow. (a) True (b) False
20. 20.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
21. 21.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) soap solution (d) plain water
22. 22.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
23. 23.🛟 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
24. 24.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) bright blue (c) reddish (d) green
25. 25.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
26. 26.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a comb (c) a dropper or spoon (d) a mirror
27. 27.🔍 Which is the odd one out? (a) detergent water (b) plain water (c) baking soda water (d) soap solution
28. 28.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) reddish-brown (c) green (d) it stays white
29. 29.🧺 Which of these is not needed for the turmeric test? (a) water (b) a magnet (c) turmeric powder (d) white paper strips
30. 30.🫧 Which of these is neutral? (a) sugar water (b) tamarind water (c) soap solution (d) vinegar
31. 31.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
32. 32.True or false: lemon juice is an acid. (a) True (b) False
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a magnet (d) turmeric powder
34. 34.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a magnet (c) a comb (d) yeast
35. 35.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the turmeric paper (d) the colour we see
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (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? What do we do with “the light we look in”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) tamarind water (d) vinegar
40. 40.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True

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