Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 160 · 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 the one thing we change? (a) the turmeric paper (b) the light we look in (c) the liquid we test (d) the colour we see
2. 2.True or false: yeast is not needed for the turmeric test. (a) True (b) False
3. 3.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it disappears (c) it turns darker red (d) it turns yellow again
4. 4.🔍 Which is the odd one out? (a) plain water (b) soap solution (c) baking soda water (d) detergent water
5. 5.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it stays yellow (b) it turns green (c) it turns blue (d) reddish-brown
6. 6.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) lemon juice (d) sugar water
7. 7.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
8. 8.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a mirror (d) a magnet
9. 9.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a magnet (c) water (d) lemon juice
12. 12.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) yeast (c) lemon juice (d) white paper strips
13. 13.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) use only kitchen items (d) sip each liquid
14. 14.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
15. 15.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
16. 16.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) yeast (c) a balloon (d) a battery cell
17. 17.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) your best clothes (d) a white party dress
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
19. 19.🔍 Which is the odd one out? (a) plain water (b) tamarind water (c) baking soda water (d) lemon juice
20. 20.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.🧺 Do we need lemon juice for the turmeric test? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) a dropper or spoon (d) yeast
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) soap solution (c) turmeric powder (d) white paper strips
24. 24.⚖️ 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
25. 25.True or false: vinegar is an acid. (a) False (b) True
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) turmeric powder (c) lemon juice (d) a magnet
27. 27.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) bright blue (c) green (d) reddish-brown
28. 28.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns red (c) it turns blue (d) it turns black
29. 29.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) lemon juice
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
32. 32.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) salt water (d) detergent water
33. 33.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) sugar water (d) vinegar
34. 34.🧺 Do we need a mirror for the turmeric test? (a) not needed (b) needed
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the colour we see
36. 36.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
37. 37.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) water (c) lemon juice (d) white paper strips
38. 38.🫧 Which of these is an acid? (a) orange juice (b) plain water (c) salt water (d) soap solution
39. 39.🫧 Which of these is a base? (a) orange juice (b) lemon juice (c) detergent water (d) plain water
40. 40.True or false: tamarind water keeps turmeric yellow. (a) True (b) False

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