Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 82 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
2. 2.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a battery cell (b) white paper (c) a small bowl (d) lemon juice
3. 3.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
4. 4.🧺 Do we need yeast for making butter? (a) needed (b) not needed
5. 5.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) a funnel (c) a clean glass (d) turmeric powder
6. 6.🛟 What should you do after touching soil or seeds? (a) wash your hands (b) rub your eyes (c) lick your fingers (d) skip washing
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) size of the balloon (c) the amount of water (d) the same bottles
8. 8.True or false: hold up the leaves is a job of the flower. (a) True (b) False
9. 9.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) salt rains down (c) sea water evaporates (d) sand is ground up
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a funnel (c) sand and pebbles (d) a balloon
11. 11.🍞 Which of these is something yeast does not need? (a) salt (b) warm water (c) sugar (d) time
12. 12.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
13. 13.True or false: a bowl is needed for making butter. (a) False (b) True
14. 14.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a small bottle (c) turmeric powder (d) warm water
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a magnet (d) a potted plant
16. 16.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a balloon (c) lemon juice (d) soap solution
17. 17.🧺 Do we need a magnet for the leafy bag test? (a) not needed (b) needed
18. 18.⚖️ 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 colour we see (d) the liquid we test
19. 19.🔍 Which is the odd one out? (a) soap solution (b) sugar water (c) detergent water (d) baking soda water
20. 20.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) time (d) vinegar
21. 21.True or false: chalk powder dissolves in water. (a) True (b) False
22. 22.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it turns pink (b) it takes much longer (c) it makes salt (d) it is much faster
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the same glass (c) how clear the water is (d) the same muddy water
24. 24.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the roots (c) the leaves (d) the flowers
25. 25.🧺 Do we need fresh cream for making butter? (a) not needed (b) needed
26. 26.🪴 Which of these is a job of the roots? (a) make seeds (b) give out water vapour (c) take in water from soil (d) carry water upward
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is what we measure. (a) True (b) False
28. 28.🧂 Does cooking oil dissolve in water? (a) does not dissolve (b) dissolves in water
29. 29.True or false: salt is not needed for growing salt crystals. (a) False (b) True
30. 30.🫧 Which of these is a base? (a) salt water (b) plain water (c) detergent water (d) sugar water
31. 31.🧺 Which of these is not needed for the fizzy balloon? (a) a magnet (b) baking soda (c) vinegar (d) an empty bottle
32. 32.🧺 Do we need a magnet for the muddy water filter? (a) not needed (b) needed
33. 33.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) tamarind water (d) detergent water
34. 34.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
35. 35.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) rub your eyes (c) wash your hands (d) skip washing
37. 37.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) a small bowl (c) white paper (d) turmeric powder
38. 38.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) oxygen (c) hydrogen (d) helium
39. 39.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) milk turning to curd (c) dissolving salt (d) baking a cake
40. 40.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we keep it the same (c) we change it

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