Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 817 · 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 stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a balloon (c) a dropper or spoon (d) turmeric powder
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
5. 5.🟡 Which of these turns turmeric reddish-brown? (a) sugar water (b) salt water (c) soap solution (d) vinegar
6. 6.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
7. 7.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) soap solution (d) a balloon
8. 8.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) an indicator (c) a pulley (d) a magnet
9. 9.⚖️ 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 measure it (c) we change it
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.🔍 Which is the odd one out? (a) detergent water (b) lemon juice (c) soap solution (d) baking soda water
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) white paper strips (d) a comb
14. 14.True or false: a magnet is needed for the turmeric test. (a) False (b) True
15. 15.⚖️ 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
16. 16.True or false: curd is a base. (a) False (b) True
17. 17.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
18. 18.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
19. 19.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) detergent water (c) lemon juice (d) sugar water
20. 20.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) white paper strips (d) yeast
22. 22.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
23. 23.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) bright blue (d) it stays white
25. 25.True or false: vinegar is a base. (a) False (b) True
26. 26.🫧 Which of these is a base? (a) tamarind water (b) soap solution (c) sugar water (d) vinegar
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the number of drops (c) the liquid we test (d) the light we look in
28. 28.🫧 Which of these is an acid? (a) curd (b) sugar water (c) soap solution (d) plain water
29. 29.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) water (c) soap solution (d) a mirror
30. 30.🫧 Which of these is an acid? (a) detergent water (b) orange juice (c) salt water (d) baking soda water
31. 31.🧺 Do we need yeast for the turmeric test? (a) needed (b) not needed
32. 32.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) a mirror (d) turmeric powder
35. 35.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) lemon juice (c) a battery cell (d) yeast
36. 36.True or false: a comb is not needed for the turmeric test. (a) False (b) True
37. 37.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) sugar water (c) lemon juice (d) soap solution
38. 38.True or false: curd is an acid. (a) True (b) False
39. 39.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns red (c) it turns black (d) it turns blue
40. 40.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue

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