Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 860 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) a dropper or spoon (c) soap solution (d) turmeric powder
2. 2.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
3. 3.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
4. 4.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) tamarind water (d) vinegar
5. 5.⚖️ 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
6. 6.🟡 Why does soap solution change turmeric’s colour? (a) soap is magnetic (b) soap is hot (c) soap water is a base (d) soap is an acid
7. 7.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) lemon juice (d) soap solution
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) False (b) True
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) True (b) False
10. 10.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) a dropper or spoon (c) a magnet (d) turmeric powder
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) soap solution (c) a dropper or spoon (d) water
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
13. 13.⚖️ 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 light we look in (c) the liquid we test (d) the turmeric paper
14. 14.🟡 Which of these turns turmeric paper reddish-brown? (a) sugar water (b) lemon juice (c) vinegar (d) soap solution
15. 15.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) baking soda water (c) tamarind water (d) sugar water
16. 16.⚖️ 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
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the colour we see is what we measure. (a) True (b) False
18. 18.🔍 Which is the odd one out? (a) soap solution (b) detergent water (c) salt water (d) baking soda water
19. 19.True or false: salt water is neutral. (a) False (b) True
20. 20.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
21. 21.🛟 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
22. 22.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
23. 23.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) an indicator (c) a pulley (d) a prism
24. 24.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns blue (b) it turns red (c) it stays yellow (d) it turns black
25. 25.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns darker red (c) it turns blue (d) it turns yellow again
26. 26.True or false: salt water turns turmeric reddish-brown. (a) True (b) False
27. 27.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
28. 28.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) lemon juice (c) sugar water (d) soap solution
29. 29.True or false: a battery cell is needed for the turmeric test. (a) False (b) True
30. 30.🫧 Which of these is an acid? (a) baking soda water (b) salt water (c) curd (d) plain water
31. 31.🧺 Which of these is not needed for the turmeric test? (a) yeast (b) white paper strips (c) lemon juice (d) soap solution
32. 32.True or false: turmeric powder is needed for the turmeric test. (a) True (b) False
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) True (b) False
34. 34.True or false: curd is an acid. (a) False (b) True
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) False (b) True
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the turmeric paper (b) the light we look in (c) the number of drops (d) the colour we see
37. 37.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
38. 38.🫧 Is orange juice an acid, a base or neutral? (a) a base (b) an acid (c) neutral
39. 39.True or false: orange juice is an acid. (a) False (b) True
40. 40.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) turmeric powder (c) soap solution (d) water

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