Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 67 · 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) water (b) turmeric powder (c) a magnet (d) lemon juice
2. 2.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
3. 3.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) soap solution (c) lemon juice (d) baking soda water
4. 4.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
6. 6.🟡 Turmeric paper meets lemon juice. What happens? (a) turns reddish-brown (b) stays yellow
7. 7.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.True or false: a comb is not needed for the turmeric test. (a) False (b) True
9. 9.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
10. 10.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) soap solution (c) plain water (d) lemon juice
11. 11.🫧 Is lemon juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) lemon juice (d) white paper strips
13. 13.True or false: plain water keeps turmeric yellow. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
15. 15.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a dropper or spoon (d) a mirror
16. 16.True or false: plain water is an acid. (a) False (b) True
17. 17.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
18. 18.🫧 Which of these is a base? (a) soap solution (b) plain water (c) lemon juice (d) sugar water
19. 19.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
20. 20.🧺 Which of these is needed for the turmeric test? (a) water (b) a comb (c) a balloon (d) a magnet
21. 21.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it stays yellow (c) it turns green (d) it turns blue
22. 22.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
23. 23.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) lemon juice (c) a battery cell (d) soap solution
24. 24.🟡 Which of these turns turmeric reddish-brown? (a) baking soda water (b) salt water (c) vinegar (d) sugar water
25. 25.True or false: a mirror is needed for the turmeric test. (a) True (b) False
26. 26.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a pulley (c) a magnet (d) a prism
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the number of drops (c) the liquid we test (d) the colour we see
28. 28.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
29. 29.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) bright blue (d) green
31. 31.🫧 Which of these is an acid? (a) plain water (b) salt water (c) detergent water (d) orange juice
32. 32.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) False (b) True
35. 35.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) lemon juice (c) a battery cell (d) a mirror
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
37. 37.True or false: salt water turns turmeric reddish-brown. (a) False (b) True
38. 38.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
39. 39.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False

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