Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 718 · 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 keeps turmeric yellow? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
2. 2.⚖️ 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
3. 3.True or false: water is needed for the turmeric test. (a) False (b) True
4. 4.⚖️ 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
5. 5.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) mix bathroom cleaners (d) sip each liquid
6. 6.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) lemon juice (c) a magnet (d) a dropper or spoon
7. 7.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) a balloon (d) turmeric powder
8. 8.True or false: lemon juice is a base. (a) False (b) True
9. 9.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) lemon juice (d) soap solution
10. 10.⚖️ 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
11. 11.🔍 Which is the odd one out? (a) vinegar (b) baking soda water (c) detergent water (d) soap solution
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) white at once (c) reddish (d) green
13. 13.True or false: tamarind water is neutral. (a) False (b) True
14. 14.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
15. 15.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) tamarind water
16. 16.True or false: sugar water is an acid. (a) False (b) True
17. 17.⚖️ 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 measure it (c) we change it
18. 18.🫧 Which of these is a base? (a) vinegar (b) curd (c) tamarind water (d) detergent water
19. 19.True or false: a dropper or spoon is needed for the turmeric test. (a) True (b) False
20. 20.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
21. 21.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
22. 22.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns yellow again (d) it turns blue
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.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Which of these is not needed for the turmeric test? (a) a mirror (b) soap solution (c) water (d) lemon juice
30. 30.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
32. 32.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) tamarind water (c) detergent water (d) baking soda water
33. 33.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
34. 34.📘 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
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the colour we see (d) the number of drops
36. 36.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) vinegar (c) baking soda water (d) soap solution
37. 37.True or false: water is not needed for the turmeric test. (a) True (b) False
38. 38.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a dropper or spoon (c) a balloon (d) white paper strips
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is kept the same. (a) True (b) False
40. 40.True or false: soap solution is not needed for the turmeric test. (a) True (b) False

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