Turmeric Indicator Experiment Worksheet

Science experiments lesson 12: Turmeric indicator: acid or base? · Set 635 · 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) white paper strips (c) a balloon (d) lemon juice
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a mirror (c) lemon juice (d) water
3. 3.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) yeast (d) lemon juice
4. 4.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) an old shirt or apron (c) your best clothes (d) a white party dress
5. 5.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) use only kitchen items (c) sip each liquid (d) sniff each bottle hard
6. 6.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
7. 7.🧺 Do we need a comb for the turmeric test? (a) not needed (b) needed
8. 8.True or false: lemon juice turns turmeric reddish-brown. (a) False (b) True
9. 9.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
10. 10.True or false: detergent water is neutral. (a) False (b) True
11. 11.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a battery cell (c) a dropper or spoon (d) a magnet
12. 12.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is what we measure. (a) True (b) False
13. 13.True or false: lemon juice is an acid. (a) False (b) True
14. 14.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) green (c) reddish (d) white at once
15. 15.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
16. 16.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
17. 17.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
18. 18.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) green (c) it stays white (d) bright blue
19. 19.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a mirror (c) yeast (d) white paper strips
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
21. 21.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) a prism (d) an indicator
22. 22.🟡 Which of these turns turmeric paper reddish-brown? (a) soap solution (b) lemon juice (c) sugar water (d) vinegar
23. 23.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
24. 24.⚖️ 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 turmeric paper
25. 25.⚖️ 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
26. 26.True or false: a comb is needed for the turmeric test. (a) True (b) False
27. 27.🧺 Do we need soap solution for the turmeric test? (a) not needed (b) needed
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the turmeric paper (b) the number of drops (c) the liquid we test (d) the light we look in
29. 29.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) sugar water (d) vinegar
30. 30.🟡 Turmeric paper meets plain water. What happens? (a) turns reddish-brown (b) stays yellow
31. 31.True or false: yeast is not needed for the turmeric test. (a) False (b) True
32. 32.True or false: soap solution is not needed for the turmeric test. (a) False (b) True
33. 33.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is the one thing we change. (a) False (b) True
34. 34.True or false: salt water is an acid. (a) True (b) False
35. 35.🫧 Which of these is a base? (a) orange juice (b) tamarind water (c) vinegar (d) soap solution
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the number of drops (c) the colour we see
37. 37.🧺 Which of these is needed for the turmeric test? (a) yeast (b) turmeric powder (c) a magnet (d) a mirror
38. 38.True or false: white paper strips is not needed for the turmeric test. (a) True (b) False
39. 39.True or false: tamarind water is a base. (a) True (b) False
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a battery cell (c) white paper strips (d) water

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