Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 526 · 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 neutral? (a) orange juice (b) plain water (c) lemon juice (d) baking soda water
2. 2.True or false: vinegar turns turmeric reddish-brown. (a) False (b) True
3. 3.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
5. 5.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) an indicator (d) a pulley
6. 6.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) True (b) False
8. 8.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
9. 9.⚖️ 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 change it (c) we measure it
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) a dropper or spoon (d) a comb
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) a balloon (d) white paper strips
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the number of drops (c) the turmeric paper (d) the light we look in
13. 13.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) use only kitchen items (c) sip each liquid (d) mix bathroom cleaners
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) baking soda water (d) sugar water
16. 16.🟡 Turmeric paper meets salt water. What happens? (a) turns reddish-brown (b) stays yellow
17. 17.⚖️ 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 liquid we test (c) the light we look in (d) the turmeric paper
18. 18.⚖️ 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
19. 19.🧺 Which of these is not needed for the turmeric test? (a) soap solution (b) water (c) lemon juice (d) yeast
20. 20.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a mirror (c) a dropper or spoon (d) water
22. 22.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns green (b) reddish-brown (c) it stays yellow (d) it turns blue
23. 23.⚖️ 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 measure it (c) we keep it the same
24. 24.🫧 Which of these is a base? (a) plain water (b) baking soda water (c) orange juice (d) sugar water
25. 25.True or false: baking soda water is an acid. (a) True (b) False
26. 26.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) white paper strips (c) soap solution (d) turmeric powder
27. 27.True or false: salt water keeps turmeric yellow. (a) True (b) False
28. 28.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
29. 29.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) detergent water (d) plain water
30. 30.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) baking soda water (c) lemon juice (d) sugar water
31. 31.🟡 Which of these turns turmeric paper reddish-brown? (a) vinegar (b) soap solution (c) sugar water (d) lemon juice
32. 32.🫧 Which of these is a base? (a) orange juice (b) detergent water (c) vinegar (d) tamarind water
33. 33.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
34. 34.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) a base (c) an acid
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is the one thing we change. (a) True (b) False
36. 36.🫧 Which of these is an acid? (a) plain water (b) detergent water (c) sugar water (d) curd
37. 37.🧺 Which of these is needed for the turmeric test? (a) white paper strips (b) a balloon (c) a mirror (d) a battery cell
38. 38.⚖️ 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
39. 39.True or false: a comb is needed for the turmeric test. (a) False (b) True
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the light we look in (b) the liquid we test (c) the colour we see

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