Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 123 · 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.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) False (b) True
2. 2.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the cream temperature (c) the amount of cream
4. 4.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is what we measure. (a) True (b) False
5. 5.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
6. 6.🫗 How do we separate chaff from wheat grain? (a) evaporating (b) handpicking (c) filtering (d) winnowing
7. 7.True or false: a magnet is needed for the leafy bag test. (a) True (b) False
8. 8.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a battery cell (c) a tray for spills (d) a magnet
9. 9.🔍 Which is the odd one out? (a) rusting iron (b) milk turning to curd (c) folding paper (d) browning lemon ink
10. 10.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
11. 11.True or false: yeast is needed for the leafy bag test. (a) True (b) False
12. 12.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the same kind of bag (b) sun or shade (c) amount of water drops (d) the size of the plant
13. 13.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it grows faster (c) it turns to sugar (d) the yeast is killed
14. 14.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the lid is warm (c) fat bits stick together (d) the jar adds butter
15. 15.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we keep it the same (b) we change it (c) we measure it
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we measure it (b) we change it (c) we keep it the same
17. 17.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a comb (c) white paper strips (d) lemon juice
18. 18.🧺 Do we need a seed for the fizzy balloon? (a) needed (b) not needed
19. 19.True or false: a mirror is needed for the fizzy balloon. (a) False (b) True
20. 20.📘 Is the fizzing a sign that a new substance is made? (a) it is only dissolving (b) no, nothing changes (c) it is only melting (d) yes, a new gas forms
21. 21.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) vinegar (c) a rubber band (d) a mirror
22. 22.True or false: time is something yeast needs. (a) False (b) True
23. 23.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it gets wet (c) it can block breathing (d) it changes colour
24. 24.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we keep it the same (b) we measure it (c) we change it
25. 25.🔍 What do you see after shaking cream in a jar for a long time? (a) bubbles of gas (b) sugar crystals (c) clear water only (d) lumps of butter
26. 26.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
27. 27.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
28. 28.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) petals (b) veins (c) roots (d) stomata
29. 29.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
30. 30.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
31. 31.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a battery cell (c) yeast (d) a shallow dish
33. 33.🔍 Which is the odd one out? (a) food colour (b) chalk powder (c) sugar (d) table salt
34. 34.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) skip washing (b) wash your hands (c) rub your eyes (d) lick your fingers
35. 35.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
36. 36.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is the one thing we change. (a) True (b) False
37. 37.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
38. 38.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) cutting the lemon (c) reading the message (d) ironing the paper
39. 39.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a small bottle (c) a magnet (d) warm water
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we change it (c) we measure it

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