Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 405 · 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) cooking oil (b) sawdust (c) chalk powder (d) food colour
2. 2.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a magnet (c) sand and pebbles (d) a clean glass
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) True (b) False
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we keep it the same (c) we measure it
5. 5.🔮 The fizzing stops after a while. Why? (a) an ingredient ran out (b) the bottle got tired (c) the gas froze (d) the balloon got cold
6. 6.🔍 Which is the odd one out? (a) warmth (b) water (c) air (d) salt
7. 7.🧺 Do we need fresh cream for making butter? (a) needed (b) not needed
8. 8.🧺 Which of these is not needed for making butter? (a) fresh cream (b) a jar with a tight lid (c) a timer (d) a balloon
9. 9.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we change it (b) we measure it (c) we keep it the same
10. 10.🧺 Which of these is not needed for the turmeric test? (a) water (b) soap solution (c) a mirror (d) turmeric powder
11. 11.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they float apart (c) they react (d) they become magnets
12. 12.🪴 Which of these is a job of the stem? (a) take in water from soil (b) carry water upward (c) make seeds (d) give out water vapour
13. 13.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) it turns to sugar (c) no, salt passes through (d) yes, all of it
14. 14.True or false: turmeric powder is needed for growing salt crystals. (a) True (b) False
15. 15.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
16. 16.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) never put seeds in mouth (c) feed them to pets (d) throw them at friends
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
18. 18.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
19. 19.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a mirror (d) a rubber band
20. 20.True or false: fresh cream is needed for making butter. (a) False (b) True
21. 21.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) yeast (c) water (d) a small bowl
23. 23.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) ironing the paper (c) plugging in the iron (d) letting the paper dry
24. 24.🟡 Why does soap solution change turmeric’s colour? (a) soap is an acid (b) soap water is a base (c) soap is magnetic (d) soap is hot
25. 25.True or false: wet seeds by a window sprouts in a few days. (a) True (b) False
26. 26.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) put it in your mouth (c) seal it in a glass jar (d) keep it away from eyes
27. 27.🍋 Secret message: who does this step — letting the paper dry? (a) a child can do it (b) an adult does it
28. 28.🫧 Which of these is a base? (a) detergent water (b) plain water (c) orange juice (d) curd
29. 29.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
30. 30.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a battery cell (c) an adult with an iron (d) yeast
31. 31.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the same kind of bag (b) the time we wait (c) sun or shade (d) amount of water drops
32. 32.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
33. 33.🧂 Does glucose powder dissolve in water? (a) dissolves in water (b) does not dissolve
34. 34.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) nothing (b) the mud (c) the salt (d) the water
35. 35.True or false: cooking an egg is a change that cannot be undone. (a) True (b) False
36. 36.🧺 Which of these is needed for making butter? (a) fresh cream (b) yeast (c) a mirror (d) turmeric powder
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🪴 Which part of a plant does this job: make seeds? (a) flower (b) leaves (c) stem (d) roots
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the amount of cream (b) the cream temperature (c) time to make butter (d) how hard we shake
40. 40.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts

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