Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 131 · 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? True or false: the light we look in is what we measure. (a) False (b) True
2. 2.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) turmeric powder (c) yeast (d) water
3. 3.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
4. 4.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
5. 5.⚖️ 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 turmeric paper (d) the light we look in
6. 6.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
7. 7.True or false: vinegar is an acid. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) salt water
9. 9.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) it turns green (c) reddish-brown (d) it stays yellow
10. 10.🔍 Which is the odd one out? (a) baking soda water (b) plain water (c) detergent water (d) soap solution
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
13. 13.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) vinegar (c) sugar water (d) lemon juice
14. 14.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
15. 15.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns yellow again (c) it turns blue (d) it disappears
16. 16.⚖️ 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 turmeric paper (d) the light we look in
17. 17.🔮 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
18. 18.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
19. 19.True or false: orange juice is an acid. (a) True (b) False
20. 20.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) use only kitchen items (c) sniff each bottle hard (d) mix bathroom cleaners
21. 21.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
22. 22.True or false: tamarind water is a base. (a) False (b) True
23. 23.🔍 Which is the odd one out? (a) plain water (b) sugar water (c) detergent water (d) salt water
24. 24.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) lemon juice (d) baking soda water
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the turmeric paper (b) the liquid we test (c) the colour we see
26. 26.🟡 Which of these turns turmeric reddish-brown? (a) detergent water (b) tamarind water (c) lemon juice (d) salt water
27. 27.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
28. 28.🫧 Which of these is a base? (a) plain water (b) vinegar (c) tamarind water (d) baking soda water
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) False (b) True
30. 30.True or false: detergent water turns turmeric reddish-brown. (a) False (b) True
31. 31.⚖️ 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 measure it (c) we change it
32. 32.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
34. 34.True or false: a magnet is needed for the turmeric test. (a) False (b) True
35. 35.🟡 Which of these keeps turmeric yellow? (a) plain water (b) soap solution (c) detergent water (d) baking soda water
36. 36.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a battery cell (b) a dropper or spoon (c) white paper strips (d) turmeric powder
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the light we look in (c) the colour we see
38. 38.🧺 Which of these is needed for the turmeric test? (a) water (b) a battery cell (c) a mirror (d) a comb
39. 39.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) baking soda water (d) sugar water

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