Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 427 · 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 of these is a change that cannot be undone? (a) rusting iron (b) freezing water (c) dissolving salt (d) folding paper
2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is kept the same. (a) True (b) False
3. 3.True or false: a comb is not needed for the yeast balloon. (a) True (b) False
4. 4.🟡 Which of these keeps turmeric yellow? (a) lemon juice (b) soap solution (c) baking soda water (d) detergent water
5. 5.🫧 What do you see when baking soda meets vinegar? (a) it turns to ice (b) lots of fizzy bubbles (c) nothing at all (d) it glows in the dark
6. 6.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) very little fizzing (c) the balloon bursts (d) it turns to honey
7. 7.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
8. 8.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is what we measure. (a) False (b) True
9. 9.🧺 Do we need a magnet for sprouting seeds? (a) needed (b) not needed
10. 10.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) turmeric powder (c) a cotton bud (d) a small bowl
11. 11.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
12. 12.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we measure it (b) we keep it the same (c) we change it
13. 13.🔍 Which is the odd one out? (a) baking a cake (b) dissolving salt (c) cooking an egg (d) rusting iron
14. 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
15. 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we change it (b) we keep it the same (c) we measure it
16. 16.🔍 Which is the odd one out? (a) letting the paper dry (b) dipping the cotton bud (c) writing the message (d) ironing the paper
17. 17.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they glow (b) they grow fruit (c) they do not sprout (d) they sprout faster
18. 18.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
19. 19.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) veins (b) stomata (c) roots (d) petals
20. 20.🧺 Do we need water for the turmeric test? (a) not needed (b) needed
21. 21.🍋 Why does the lemon writing turn brown with heat? (a) heat adds colour (b) the iron is brown (c) paper turns lemony (d) the juice scorches first
22. 22.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) lemon juice (c) soap solution (d) a dropper or spoon
23. 23.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) turmeric powder (c) yeast (d) a few hours
24. 24.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) vinegar (c) soap solution (d) lemon juice
25. 25.🧺 Which of these is not needed for the fizzy balloon? (a) a funnel or spoon (b) a tray for spills (c) baking soda (d) a seed
26. 26.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) yeast (c) a cotton bud (d) white paper
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is what we measure. (a) True (b) False
28. 28.🔍 Which is the odd one out? (a) putting the iron away (b) cutting the lemon (c) plugging in the iron (d) reading the message
29. 29.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a mirror (c) a rubber band (d) yeast
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) both stay behind (c) leaves stay behind (d) leaves pass through
32. 32.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a clean glass (c) sand and pebbles (d) turmeric powder
33. 33.🧺 Which of these is needed for the turmeric test? (a) a comb (b) a magnet (c) turmeric powder (d) a balloon
34. 34.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the same kind of bag (b) the kind of plant (c) the time we wait (d) sun or shade
35. 35.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
36. 36.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
37. 37.🛟 What should you do after touching soil or seeds? (a) skip washing (b) lick your fingers (c) wash your hands (d) rub your eyes
38. 38.🧺 Which of these is not needed for the turmeric test? (a) a battery cell (b) soap solution (c) turmeric powder (d) a dropper or spoon
39. 39.🔍 Which is the odd one out? (a) cutting the lemon (b) plugging in the iron (c) ironing the paper (d) letting the paper dry
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a balloon (d) muddy water

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