Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 100 · 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.🌱 Is sugar needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
2. 2.True or false: warm water is needed for the yeast balloon. (a) False (b) True
3. 3.True or false: fresh cream is needed for making butter. (a) True (b) False
4. 4.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the kind of balloon (c) the same bottle (d) spoons of baking soda
6. 6.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns black (b) it stays yellow (c) it turns red (d) it turns blue
7. 7.🧺 Do we need cotton wool for sprouting seeds? (a) not needed (b) needed
8. 8.🔍 Which is the odd one out? (a) browning lemon ink (b) milk turning to curd (c) melting butter (d) cooking an egg
9. 9.True or false: seeds in the freezer sprouts in a few days. (a) True (b) False
10. 10.True or false: a battery cell is not needed for the yeast balloon. (a) True (b) False
11. 11.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so it gets hot (c) so air gets out (d) so cream does not spill
12. 12.🧺 Which of these is not needed for the leafy bag test? (a) a few hours (b) a potted plant (c) a clear plastic bag (d) a mirror
13. 13.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the bottle got tired (c) the balloon got cold (d) an ingredient ran out
14. 14.True or false: dissolving salt is a change that cannot be undone. (a) True (b) False
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) spoons of baking soda (c) the amount of vinegar (d) the same bottle
16. 16.🫗 How do we separate sugar from sugar water? (a) evaporating (b) sieving (c) winnowing (d) filtering
17. 17.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) fish make it (d) sea water evaporates
19. 19.🌱 Which of these is needed for a seed to sprout? (a) soil (b) salt (c) sunlight (d) water
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a tray for spills (c) a seed (d) an empty bottle
21. 21.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
22. 22.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
23. 23.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) writing stays faint (c) the paper floats (d) it gets darker
24. 24.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) reading the message (c) ironing the paper (d) dipping the cotton bud
26. 26.🧺 Do we need turmeric powder for the leafy bag test? (a) not needed (b) needed
27. 27.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) sniff each bottle hard (d) use only kitchen items
28. 28.🌱 Will these sprout: wet seeds in the dark? (a) sprouts (b) does not sprout
29. 29.🫧 Is vinegar an acid, a base or neutral? (a) a base (b) an acid (c) neutral
30. 30.🧺 Do we need a balloon for sprouting seeds? (a) needed (b) not needed
31. 31.True or false: water is not needed for a seed to sprout. (a) True (b) False
32. 32.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) cotton or cloth (c) sand and pebbles (d) a balloon
33. 33.🧺 Which of these is not needed for sprouting seeds? (a) a balloon (b) a few days (c) moong seeds (d) water
34. 34.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) writing the message (c) reading the message (d) cutting the lemon
35. 35.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
36. 36.🍞 Does yeast need warm water to make gas? (a) yeast does not need it (b) yeast needs it
37. 37.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a rubber band (c) vinegar (d) a mirror
38. 38.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) wet seeds by a window (c) seeds on dry cotton (d) seeds on wet cotton
39. 39.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
40. 40.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True

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