Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 583 · 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.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
2. 2.True or false: salt water keeps turmeric yellow. (a) True (b) False
3. 3.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) lemon juice (d) salt water
4. 4.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
6. 6.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
8. 8.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) water (c) a comb (d) a balloon
9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) an indicator (d) a pulley
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) sugar water (c) lemon juice (d) soap solution
11. 11.🫧 Which of these is a base? (a) lemon juice (b) sugar water (c) curd (d) baking soda water
12. 12.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we measure it (c) we keep it the same
14. 14.🟡 Which of these keeps turmeric yellow? (a) vinegar (b) detergent water (c) baking soda water (d) soap solution
15. 15.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
17. 17.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) reddish (b) white at once (c) green (d) bright blue
19. 19.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sniff each bottle hard (c) sip each liquid (d) use only kitchen items
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) a white party dress (d) your school uniform
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns green (c) it turns blue (d) it stays yellow
22. 22.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
23. 23.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the turmeric paper
24. 24.True or false: water is not needed for the turmeric test. (a) False (b) True
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns yellow again (b) it turns blue (c) it turns darker red (d) it disappears
26. 26.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
27. 27.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) detergent water (d) sugar water
29. 29.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
30. 30.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
32. 32.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) plain water
33. 33.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we keep it the same (c) we change it
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
36. 36.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns blue (d) it turns red
37. 37.True or false: a comb is needed for the turmeric test. (a) True (b) False
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) detergent water (d) vinegar
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we change it (c) we measure it
40. 40.True or false: salt water is neutral. (a) False (b) True

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