Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 715 · 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: vinegar is a base. (a) True (b) False
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) lemon juice (d) a balloon
3. 3.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) reddish-brown (b) it turns blue (c) it turns green (d) it stays yellow
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the turmeric paper (c) the colour we see
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) soap solution (c) white paper strips (d) a mirror
6. 6.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
7. 7.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
8. 8.🛟 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
9. 9.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
10. 10.🧺 Which of these is needed for the turmeric test? (a) water (b) a balloon (c) a battery cell (d) a comb
11. 11.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
12. 12.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) green (d) white at once
13. 13.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a mirror (c) a battery cell (d) a dropper or spoon
14. 14.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
15. 15.🔍 Which is the odd one out? (a) lemon juice (b) baking soda water (c) detergent water (d) soap solution
16. 16.⚖️ 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 liquid we test (d) the light we look in
17. 17.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it stays yellow (c) it turns blue (d) it turns black
18. 18.True or false: a comb is not needed for the turmeric test. (a) False (b) True
19. 19.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns darker red (b) it disappears (c) it turns yellow again (d) it turns blue
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
21. 21.True or false: lemon juice is neutral. (a) False (b) True
22. 22.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it turns black (b) it turns blue (c) it turns red (d) it stays yellow
23. 23.🧺 Do we need yeast for the turmeric test? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) water (d) lemon juice
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) an old shirt or apron (d) a white party dress
26. 26.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
27. 27.True or false: soap solution is needed for the turmeric test. (a) False (b) True
28. 28.🔍 Which is the odd one out? (a) sugar water (b) lemon juice (c) plain water (d) soap solution
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a magnet (c) an indicator (d) a pulley
31. 31.True or false: a dropper or spoon is not needed for the turmeric test. (a) True (b) False
32. 32.🟡 Turmeric paper meets soap solution. What happens? (a) stays yellow (b) turns reddish-brown
33. 33.🟡 Turmeric paper meets lemon juice. What happens? (a) stays yellow (b) turns reddish-brown
34. 34.True or false: a magnet is not needed for the turmeric test. (a) True (b) False
35. 35.🧺 Which of these is not needed for the turmeric test? (a) a comb (b) white paper strips (c) turmeric powder (d) a dropper or spoon
36. 36.⚖️ 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
37. 37.True or false: a mirror is needed for the turmeric test. (a) True (b) False
38. 38.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) detergent water (d) vinegar
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a battery cell for the turmeric test? (a) not needed (b) needed

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