Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 600 · 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.🫧 Which of these is a base? (a) lemon juice (b) plain water (c) orange juice (d) soap solution
2. 2.🛟 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
3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
4. 4.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
6. 6.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
7. 7.True or false: water is not needed for the turmeric test. (a) True (b) False
8. 8.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
9. 9.True or false: yeast is needed for the turmeric test. (a) False (b) True
10. 10.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) salt water
11. 11.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
12. 12.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) white paper strips (d) yeast
13. 13.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
14. 14.True or false: baking soda water keeps turmeric yellow. (a) False (b) True
15. 15.🫧 Which of these is a base? (a) plain water (b) detergent water (c) tamarind water (d) vinegar
16. 16.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it stays yellow (d) it turns red
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
18. 18.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
19. 19.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
21. 21.🫧 Which of these is an acid? (a) detergent water (b) tamarind water (c) sugar water (d) baking soda water
22. 22.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) a prism (d) an indicator
23. 23.⚖️ 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
24. 24.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it turns blue (c) reddish-brown (d) it stays yellow
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the colour we see
26. 26.⚖️ 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 change it (c) we keep it the same
27. 27.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) a white party dress (c) your school uniform (d) an old shirt or apron
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the number of drops
29. 29.True or false: vinegar is an acid. (a) False (b) True
30. 30.🧺 Do we need a mirror for the turmeric test? (a) needed (b) not needed
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
32. 32.⚖️ 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
33. 33.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) plain water (c) vinegar (d) detergent water
34. 34.⚖️ 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
35. 35.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) tamarind water (d) baking soda water
36. 36.True or false: soap solution is an acid. (a) True (b) False
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
38. 38.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) salt water (d) soap solution
39. 39.True or false: salt water keeps turmeric yellow. (a) True (b) False
40. 40.True or false: detergent water keeps turmeric yellow. (a) True (b) False

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