Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 493 · 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 not needed for the turmeric test? (a) turmeric powder (b) soap solution (c) yeast (d) lemon juice
2. 2.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) use only kitchen items (d) sniff each bottle hard
3. 3.True or false: orange juice is an acid. (a) True (b) False
4. 4.🔮 Predict: turmeric paper is dipped in baking soda water. What colour does it turn? (a) it turns blue (b) reddish-brown (c) it turns green (d) it stays yellow
5. 5.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the liquid we test (b) the colour we see (c) the turmeric paper (d) the number of drops
6. 6.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water
7. 7.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is kept the same. (a) False (b) True
9. 9.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it stays yellow (b) it turns black (c) it turns blue (d) it turns red
10. 10.True or false: detergent water is neutral. (a) True (b) False
11. 11.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
12. 12.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a balloon (b) turmeric powder (c) water (d) white paper strips
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is what we measure. (a) True (b) False
14. 14.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) it stays white (b) reddish-brown (c) green (d) bright blue
15. 15.True or false: plain water is neutral. (a) False (b) True
16. 16.True or false: a mirror is needed for the turmeric test. (a) False (b) True
17. 17.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) a dropper or spoon (d) a comb
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) a battery cell (d) white paper strips
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a magnet (c) lemon juice (d) a dropper or spoon
20. 20.⚖️ 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
21. 21.⚖️ 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
22. 22.True or false: yeast is not needed for the turmeric test. (a) False (b) True
23. 23.True or false: plain water keeps turmeric yellow. (a) False (b) True
24. 24.True or false: water is not needed for the turmeric test. (a) True (b) False
25. 25.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
26. 26.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
27. 27.⚖️ 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
28. 28.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) a magnet (d) water
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.🟡 Turmeric paper meets detergent water. What happens? (a) stays yellow (b) turns reddish-brown
31. 31.True or false: a dropper or spoon is not needed for the turmeric test. (a) False (b) True
32. 32.⚖️ 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
33. 33.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
34. 34.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
35. 35.True or false: soap solution is needed for the turmeric test. (a) False (b) True
36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) a prism (b) a pulley (c) an indicator (d) a magnet
37. 37.True or false: orange juice is a base. (a) False (b) True
38. 38.🫧 Which of these is neutral? (a) baking soda water (b) vinegar (c) tamarind water (d) sugar water
39. 39.⚖️ 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
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same

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