Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 594 · 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.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the liquid we test (c) the number of drops (d) the colour we see
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) turmeric powder (d) soap solution
3. 3.🧺 Which of these is needed for the turmeric test? (a) yeast (b) lemon juice (c) a comb (d) a battery cell
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) water (c) turmeric powder (d) a comb
6. 6.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
7. 7.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
8. 8.🔍 Which is the odd one out? (a) tamarind water (b) salt water (c) detergent water (d) lemon juice
9. 9.🫧 Which of these is a base? (a) tamarind water (b) plain water (c) sugar water (d) baking soda water
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) soap solution (d) a mirror
11. 11.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) green (c) bright blue (d) white at once
13. 13.⚖️ 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
14. 14.🛟 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
15. 15.🫧 Which of these is neutral? (a) salt water (b) orange juice (c) vinegar (d) tamarind water
16. 16.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) lemon juice (c) a balloon (d) a dropper or spoon
17. 17.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
18. 18.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
19. 19.🧺 Which of these is needed for the turmeric test? (a) water (b) a magnet (c) a battery cell (d) yeast
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
21. 21.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the number of drops (d) the turmeric paper
22. 22.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
23. 23.True or false: tamarind water turns turmeric reddish-brown. (a) False (b) True
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a balloon (d) soap solution
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) white paper strips (c) yeast (d) a magnet
27. 27.True or false: white paper strips is needed for the turmeric test. (a) True (b) False
28. 28.⚖️ 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
29. 29.🔮 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
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
31. 31.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) turmeric powder (c) water (d) a magnet
32. 32.True or false: yeast is not needed for the turmeric test. (a) False (b) True
33. 33.True or false: vinegar is a base. (a) True (b) False
34. 34.🫧 Which of these is an acid? (a) plain water (b) salt water (c) orange juice (d) baking soda water
35. 35.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) soap solution (c) vinegar (d) salt water
36. 36.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
37. 37.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
38. 38.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) baking soda water (c) soap solution (d) detergent water
39. 39.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap is magnetic (c) soap water is a base (d) soap is hot
40. 40.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) neutral (c) an acid

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids