Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 907 · 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) air (b) salt (c) sugar (d) soil
2. 2.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) the same bottle (c) size of the balloon (d) the kind of balloon
3. 3.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
4. 4.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we keep it the same (c) we change it
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we measure it (c) we change it
6. 6.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
7. 7.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) lemon juice (c) a cotton bud (d) a balloon
8. 8.True or false: a comb is not needed for the fizzy balloon. (a) False (b) True
9. 9.True or false: warm water is not needed for growing salt crystals. (a) True (b) False
10. 10.True or false: baking soda water is an acid. (a) False (b) True
11. 11.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) moong seeds (c) a magnet (d) a balloon
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is kept the same? (a) the same dish (b) days to see crystals (c) sunny or shady place
13. 13.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
14. 14.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🫗 Is filtered pond water safe to drink? (a) yes, if it is cold (b) no, germs may stay (c) yes, always (d) yes, if it is clear
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) in a busy doorway (d) safe from small children
18. 18.🌱 Seeds need water, air and ___ to sprout. (a) warmth (b) salt (c) sugar (d) soil
19. 19.🌱 Will these sprout: seeds in the freezer? (a) does not sprout (b) sprouts
20. 20.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
21. 21.🔍 Which is the odd one out? (a) lemon juice (b) orange juice (c) vinegar (d) soap solution
22. 22.🧺 Do we need yeast for the secret lemon message? (a) needed (b) not needed
23. 23.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.True or false: salt is something yeast needs. (a) True (b) False
25. 25.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) water (c) a mirror (d) a magnet
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) how dark the writing is (b) the kind of juice (c) the same cotton bud
27. 27.True or false: food colour dissolves in water. (a) False (b) True
28. 28.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.⚖️ 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
30. 30.🪴 Which part of a plant does this job: hold the plant in soil? (a) stem (b) flower (c) leaves (d) roots
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) False (b) True
32. 32.🛟 Which rule keeps the turmeric test safe? (a) sip each liquid (b) mix bathroom cleaners (c) use only kitchen items (d) sniff each bottle hard
33. 33.🫧 Which of these is an acid? (a) baking soda water (b) plain water (c) sugar water (d) orange juice
34. 34.🧺 Which of these is needed for the leafy bag test? (a) a few hours (b) a battery cell (c) a magnet (d) vinegar
35. 35.🍞 Does yeast need salt to make gas? (a) yeast does not need it (b) yeast needs it
36. 36.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.True or false: hold the plant in soil is a job of the roots. (a) False (b) True
39. 39.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) baking soda (c) a funnel or spoon (d) a seed
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is what we measure. (a) False (b) True

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