Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 947 · 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.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
2. 2.🧂 Which of these dissolves in water? (a) chalk powder (b) small pebbles (c) glucose powder (d) sand
3. 3.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) a magnet (d) a timer
4. 4.True or false: lemon juice is needed for the secret lemon message. (a) True (b) False
5. 5.🎈 Why does the balloon blow up? (a) gas is made inside (b) vinegar is hot (c) outside air gets in (d) the bottle shrinks
6. 6.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) warm water (c) a balloon (d) yeast
7. 7.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
8. 8.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a clean glass (c) a mirror (d) sand and pebbles
9. 9.True or false: a mirror is needed for making butter. (a) True (b) False
10. 10.True or false: lemon juice is a base. (a) True (b) False
11. 11.🌱 Is sunlight needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
12. 12.🫧 Which of these is an acid? (a) soap solution (b) salt water (c) sugar water (d) curd
13. 13.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
14. 14.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
15. 15.🧺 Do we need an adult with an iron for the secret lemon message? (a) not needed (b) needed
16. 16.⚖️ 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 measure it (c) we keep it the same
17. 17.🔍 Which is the odd one out? (a) lemon juice (b) detergent water (c) baking soda water (d) soap solution
18. 18.🍞 Which of these is something yeast does not need? (a) time (b) warm water (c) salt (d) sugar
19. 19.🧂 Does food colour dissolve in water? (a) does not dissolve (b) dissolves in water
20. 20.🧺 Which of these is needed for sprouting seeds? (a) turmeric powder (b) yeast (c) a battery cell (d) water
21. 21.🧺 Do we need sugar for the yeast balloon? (a) needed (b) not needed
22. 22.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
23. 23.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same paper (b) the same cotton bud (c) the iron setting (d) the kind of juice
24. 24.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) it turns blue (b) it turns to cheese (c) more butter forms (d) no butter forms
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
26. 26.🫧 Which of these is an acid? (a) vinegar (b) plain water (c) baking soda water (d) soap solution
27. 27.True or false: vinegar is something yeast needs. (a) False (b) True
28. 28.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) carry water upward (c) make seeds (d) take in water from soil
29. 29.True or false: sand and pebbles is needed for the muddy water filter. (a) True (b) False
30. 30.🧺 Do we need sunlight for the leafy bag test? (a) not needed (b) needed
31. 31.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) leaves stay behind (c) tea stays behind (d) both stay behind
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the number of drops (b) the colour we see (c) the liquid we test (d) the turmeric paper
33. 33.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) the cream temperature (c) time to make butter (d) the amount of cream
34. 34.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) muddier (d) hot
35. 35.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) soil (c) water (d) air
36. 36.True or false: a magnet is needed for the secret lemon message. (a) False (b) True
37. 37.🌱 Which of these is needed for a seed to sprout? (a) salt (b) soil (c) warmth (d) sugar
38. 38.🍋 Which of these steps is a job for an adult? (a) ironing the paper (b) writing the message (c) letting the paper dry (d) dipping the cotton bud
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is kept the same. (a) True (b) False
40. 40.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) salt from sea water (c) husk from rice grain (d) mud from water

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