Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 272 · 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: carry water upward? (a) roots (b) stem (c) flower (d) leaves
2. 2.🧺 Which of these is not needed for sprouting seeds? (a) turmeric powder (b) moong seeds (c) cotton wool (d) a few days
3. 3.True or false: salt water is an acid. (a) True (b) False
4. 4.🔍 Which is the odd one out? (a) milk turning to curd (b) freezing water (c) baking a cake (d) cooking an egg
5. 5.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) stem (c) leaves (d) roots
6. 6.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) the same jar (c) how hard we shake (d) the cream temperature
8. 8.🍞 Why does yeast work slowly in cold water? (a) cold water is heavy (b) cold slows yeast down (c) cold makes it pink (d) cold kills sugar
9. 9.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
10. 10.True or false: reading the message is a job a child can do. (a) True (b) False
11. 11.True or false: detergent water is an acid. (a) False (b) True
12. 12.🛟 What should you do after touching soil or seeds? (a) skip washing (b) rub your eyes (c) wash your hands (d) lick your fingers
13. 13.🔍 Which is the odd one out? (a) orange juice (b) plain water (c) salt water (d) sugar water
14. 14.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a mirror (c) cold water to rinse (d) a timer
15. 15.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is what we measure. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) baking a cake (b) melting ice (c) freezing water (d) folding paper
17. 17.🔮 Predict: you use plain water instead of vinegar. What happens? (a) very little fizzing (b) a huge eruption (c) it turns to honey (d) the balloon bursts
18. 18.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) baking a cake (c) rusting iron (d) melting butter
19. 19.True or false: salt from sea water is done by evaporating. (a) True (b) False
20. 20.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
21. 21.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a magnet (c) a clear plastic bag (d) a few hours
22. 22.🧺 Which of these is not needed for the turmeric test? (a) a magnet (b) a dropper or spoon (c) soap solution (d) water
23. 23.⚖️ 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 what we measure. (a) False (b) True
24. 24.True or false: freezing water is a change that cannot be undone. (a) True (b) False
25. 25.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) how clear the water is (c) the same muddy water (d) the same glass
26. 26.⚖️ 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 same dish (b) the kind of salt (c) days to see crystals (d) sunny or shady place
27. 27.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) a mirror (c) a magnet (d) sunlight
28. 28.🧺 Do we need a timer for making butter? (a) needed (b) not needed
29. 29.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) only an adult (c) whoever is fastest (d) the youngest child
31. 31.True or false: take in water from soil is a job of the stem. (a) False (b) True
32. 32.🫧 Which of these is neutral? (a) salt water (b) baking soda water (c) lemon juice (d) tamarind water
33. 33.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a funnel or spoon (c) a seed (d) vinegar
34. 34.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the kind of balloon (b) spoons of baking soda (c) size of the balloon
36. 36.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a mirror (c) a balloon (d) a bowl
37. 37.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) fat bits stick together (c) the lid is warm (d) shaking adds salt
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) the kind of balloon (c) spoons of baking soda (d) size of the balloon
39. 39.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) a battery cell (c) turmeric powder (d) muddy water
40. 40.True or false: small stones from dal is done by winnowing. (a) True (b) False

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