Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 689 · 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.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
2. 2.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
3. 3.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) tamarind water (d) lemon juice
4. 4.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) a magnet (d) soap solution
5. 5.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a comb (c) soap solution (d) a mirror
6. 6.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the turmeric paper (c) the liquid we test (d) the colour we see
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the light we look in
8. 8.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) it stays yellow (c) reddish-brown (d) it turns blue
9. 9.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) white at once (c) reddish (d) bright blue
10. 10.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) an old shirt or apron (c) your school uniform (d) a white party dress
11. 11.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
12. 12.⚖️ 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
13. 13.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
14. 14.⚖️ 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
15. 15.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
16. 16.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) vinegar (d) baking soda water
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
18. 18.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) white paper strips (d) a magnet
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a dropper or spoon (c) turmeric powder (d) a mirror
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
21. 21.True or false: soap solution turns turmeric reddish-brown. (a) True (b) False
22. 22.🍋 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
23. 23.True or false: lemon juice is not needed for the turmeric test. (a) False (b) True
24. 24.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
25. 25.True or false: lemon juice turns turmeric reddish-brown. (a) True (b) False
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) a dropper or spoon (c) water (d) turmeric powder
27. 27.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sniff each bottle hard (d) sip each liquid
28. 28.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
29. 29.🫧 Is tamarind water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
31. 31.🫧 Which of these is an acid? (a) soap solution (b) detergent water (c) salt water (d) vinegar
32. 32.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) an indicator (c) a prism (d) a magnet
33. 33.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) salt water (c) baking soda water (d) detergent water
34. 34.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
35. 35.⚖️ 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
36. 36.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
37. 37.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the colour we see (c) the turmeric paper (d) the liquid we test
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the turmeric test? (a) turmeric powder (b) a balloon (c) a mirror (d) a battery cell

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