Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 477 · 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.🧈 Before the butter appears, what does the cream turn into? (a) clear water (b) ice (c) powder (d) thick whipped cream
2. 2.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
3. 3.🧂 Which of these dissolves in water? (a) chalk powder (b) sand (c) sawdust (d) table salt
4. 4.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the amount poured is kept the same. (a) False (b) True
5. 5.🍞 Which of these is something yeast needs? (a) warm water (b) salt (c) sunlight (d) a magnet
6. 6.True or false: baking soda water is a base. (a) True (b) False
7. 7.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a balloon (c) sugar (d) an empty bottle
8. 8.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) very little fizzing (c) it turns to honey (d) a huge eruption
9. 9.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) seeds on wet cotton (c) boiled seeds (d) seeds in the freezer
10. 10.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) lemon juice (d) a magnet
12. 12.🧺 Do we need a balloon for the muddy water filter? (a) not needed (b) needed
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
14. 14.🧈 Which of these is a change that can be undone? (a) rusting iron (b) browning lemon ink (c) melting butter (d) cooking an egg
15. 15.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
16. 16.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the amount of salt (b) the amount of water (c) days to see crystals (d) the same dish
17. 17.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) bright blue (c) white at once (d) reddish
18. 18.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) a mirror (c) sugar (d) warm water
19. 19.🌱 Which of these does not sprout? (a) wet seeds by a window (b) seeds on wet cotton (c) wet seeds in the dark (d) boiled seeds
20. 20.🔍 Which is the odd one out? (a) salt (b) vinegar (c) warm water (d) sunlight
21. 21.🔮 Predict: you stop shaking after only one minute. What do you have? (a) butter lumps (b) cheese (c) ghee (d) still runny cream
22. 22.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
23. 23.🫧 Which of these is neutral? (a) curd (b) detergent water (c) baking soda water (d) salt water
24. 24.True or false: sunlight is needed for the leafy bag test. (a) True (b) False
25. 25.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) white paper (c) a small bowl (d) a magnet
26. 26.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) smaller crystals (c) bigger crystals (d) no crystals
27. 27.True or false: melting ice is a change that can be undone. (a) False (b) True
28. 28.True or false: a mirror is not needed for the yeast balloon. (a) True (b) False
29. 29.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
30. 30.⚖️ 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
31. 31.🛟 What should you do after handling muddy water? (a) wash hands afterwards (b) lick your fingers (c) nothing is needed (d) wipe hands on face
32. 32.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
33. 33.🫗 Which of these is done by evaporating? (a) gravel from fine sand (b) bad grains from rice (c) tea leaves from tea (d) salt from sea water
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a mirror (b) a dropper or spoon (c) turmeric powder (d) soap solution
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) cotton or cloth (c) a clean glass (d) yeast
36. 36.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is what we measure. (a) False (b) True
37. 37.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) salt (d) a magnet
38. 38.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
40. 40.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) plugging in the iron (c) ironing the paper (d) cutting the lemon

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