Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 251 · 40 questions

What you do (Find the experiment, use the idea): 1. Read the question and find its experiment. 2. Use that experiment’s idea — acid and base, indicator colours, chemical change, what seeds and yeast need, transpiration, crystals or filtering. 3. For a fair-test question, find what is changed, kept the same and measured. 4. For a safety question, choose what keeps everyone safe.

1. 1.🔍 Which is the odd one out? (a) salt (b) soil (c) air (d) sugar
2. 2.🔍 Which is the odd one out? (a) sugar (b) time (c) warm water (d) vinegar
3. 3.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) True (b) False
4. 4.True or false: sugar water is a base. (a) False (b) True
5. 5.True or false: a shallow dish is needed for growing salt crystals. (a) True (b) False
6. 6.True or false: detergent water keeps turmeric yellow. (a) True (b) False
7. 7.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) dry yeast (c) a battery cell (d) turmeric powder
8. 8.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a mirror (c) dry yeast (d) a small bottle
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) how clear the water is (c) the same muddy water (d) the filter material
10. 10.True or false: a balloon is needed for the turmeric test. (a) False (b) True
11. 11.🍋 Why can’t you see the lemon writing once it dries? (a) the paper ate it (b) dry juice is see-through (c) it turned into air (d) the ink is magnetic
12. 12.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
13. 13.True or false: a mirror is not needed for the turmeric test. (a) False (b) True
14. 14.True or false: a mirror is not needed for the leafy bag test. (a) False (b) True
15. 15.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) how many seeds sprout (c) the kind of seeds
16. 16.True or false: sunlight is not needed for a seed to sprout. (a) False (b) True
17. 17.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) warm water (c) turmeric powder (d) sugar
18. 18.True or false: soap solution keeps turmeric yellow. (a) True (b) False
19. 19.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
20. 20.True or false: yeast is not needed for the secret lemon message. (a) True (b) False
21. 21.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it turns sweet (b) crystals grow faster (c) it fizzes (d) few or no crystals
22. 22.🔍 Which is the odd one out? (a) dissolving salt (b) melting butter (c) freezing water (d) cooking an egg
23. 23.🔮 The fizzing stops after a while. Why? (a) the balloon got cold (b) the bottle got tired (c) an ingredient ran out (d) the gas froze
24. 24.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) True (b) False
25. 25.🧂 Does baking soda dissolve in water? (a) does not dissolve (b) dissolves in water
26. 26.🌱 Which of these is not needed for a seed to sprout? (a) salt (b) water (c) air (d) warmth
27. 27.True or false: baking soda is not needed for the fizzy balloon. (a) True (b) False
28. 28.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) white paper strips (d) soap solution
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) sand and pebbles (c) a mirror (d) cotton or cloth
30. 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) time (d) vinegar
32. 32.🧺 Which of these is not needed for the turmeric test? (a) white paper strips (b) a dropper or spoon (c) water (d) a comb
33. 33.🧺 Which of these is not needed for the fizzy balloon? (a) a tray for spills (b) a funnel or spoon (c) baking soda (d) a seed
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.True or false: turmeric powder is not needed for the secret lemon message. (a) True (b) False
36. 36.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
37. 37.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout
38. 38.🧺 Which of these is needed for making butter? (a) a mirror (b) a battery cell (c) fresh cream (d) turmeric powder
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) size of the balloon (c) the kind of balloon (d) the same bottle
40. 40.True or false: browning lemon ink is a change that can be undone. (a) True (b) False

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