Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 861 · 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.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
2. 2.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
3. 3.⚖️ 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
4. 4.True or false: white paper strips is needed for the turmeric test. (a) False (b) True
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) soap solution (d) white paper strips
6. 6.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
7. 7.⚖️ 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
8. 8.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
9. 9.🔍 Which is the odd one out? (a) vinegar (b) lemon juice (c) tamarind water (d) baking soda water
10. 10.True or false: vinegar is neutral. (a) True (b) False
11. 11.🔍 Which is the odd one out? (a) baking soda water (b) sugar water (c) detergent water (d) soap solution
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the number of drops
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) soap solution (d) a balloon
14. 14.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
15. 15.⚖️ 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
16. 16.🟡 Turmeric paper meets baking soda water. What happens? (a) stays yellow (b) turns reddish-brown
17. 17.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a comb (c) a dropper or spoon (d) turmeric powder
18. 18.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) white paper strips (c) a dropper or spoon (d) lemon juice
19. 19.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns red (b) it stays yellow (c) it turns black (d) it turns blue
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) yeast (b) water (c) turmeric powder (d) white paper strips
21. 21.🫧 Which of these is neutral? (a) lemon juice (b) orange juice (c) sugar water (d) tamarind water
22. 22.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
23. 23.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) soap solution (d) vinegar
24. 24.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) salt water
25. 25.🟡 Which of these keeps turmeric yellow? (a) plain water (b) baking soda water (c) soap solution (d) detergent water
26. 26.True or false: a mirror is needed for the turmeric test. (a) True (b) False
27. 27.⚖️ 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
28. 28.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
29. 29.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) plain water (d) detergent water
32. 32.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it turns blue (c) it turns yellow again (d) it disappears
33. 33.True or false: lemon juice is not needed for the turmeric test. (a) True (b) False
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the number of drops
35. 35.⚖️ 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
36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a prism (c) a magnet (d) a pulley
37. 37.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your best clothes (c) a white party dress (d) your school uniform
38. 38.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) vinegar (d) baking soda water
39. 39.True or false: lemon juice is an acid. (a) True (b) False
40. 40.True or false: turmeric powder is needed for the turmeric test. (a) False (b) True

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