Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 898 · 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 part of a plant does this job: take in water from soil? (a) stem (b) leaves (c) roots (d) flower
2. 2.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the water (c) nothing (d) the salt
3. 3.True or false: detergent water turns turmeric reddish-brown. (a) True (b) False
4. 4.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) it glows in the dark (c) nothing at all (d) it turns to ice
5. 5.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
6. 6.⚖️ 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 change it (b) we keep it the same (c) we measure it
7. 7.⚖️ 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 change it (c) we keep it the same
8. 8.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the kind of seeds (b) wet or dry cotton (c) how many seeds sprout
9. 9.True or false: salt is something yeast does not need. (a) True (b) False
10. 10.True or false: vinegar is a base. (a) False (b) True
11. 11.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a few hours (c) vinegar (d) a clear plastic bag
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the same jar is the one thing we change. (a) False (b) True
13. 13.🛟 The water for the yeast should be ___. (a) warm, not hot (b) boiling hot (c) ice cold (d) very salty
14. 14.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) a battery cell (c) turmeric powder (d) a small bowl
15. 15.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) True (b) False
16. 16.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) writing the message (c) reading the message (d) letting the paper dry
17. 17.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is the one thing we change. (a) True (b) False
18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) a balloon (c) sugar (d) a small bottle
19. 19.True or false: gravel from fine sand is done by filtering. (a) False (b) True
20. 20.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it wilts and droops (b) it flowers more (c) it turns blue (d) it grows faster
21. 21.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the same bottles (c) the water temperature
23. 23.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the same paper (b) the iron setting (c) the same cotton bud (d) how dark the writing is
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of yeast (c) the amount of water (d) the amount of sugar
26. 26.🔍 Which is the odd one out? (a) freezing water (b) dissolving salt (c) folding paper (d) milk turning to curd
27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is what we measure. (a) True (b) False
28. 28.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we change it (c) we measure it
29. 29.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) time to make butter (b) how hard we shake (c) the cream temperature (d) the amount of cream
30. 30.🧺 Do we need sunlight for the leafy bag test? (a) needed (b) not needed
31. 31.🫗 How do we separate small stones from dal? (a) sieving (b) winnowing (c) evaporating (d) handpicking
32. 32.⚖️ 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 keep it the same (b) we measure it (c) we change it
33. 33.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a battery cell (c) salt (d) warm water
34. 34.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) a balloon (c) a battery cell (d) water
35. 35.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) a funnel or spoon (c) a balloon (d) vinegar
36. 36.True or false: yeast is not needed for the turmeric test. (a) True (b) False
37. 37.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
38. 38.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they turn to stones (b) they melt (c) yes, they sprout (d) no, never
39. 39.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
40. 40.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed

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