Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 790 · 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) ice (b) thick whipped cream (c) clear water (d) powder
2. 2.🧺 Do we need a clean glass for the muddy water filter? (a) not needed (b) needed
3. 3.True or false: bad grains from rice is done by sieving. (a) True (b) False
4. 4.🛟 Why must a plastic bag never go over anyone’s head? (a) it changes colour (b) it can block breathing (c) it is too big (d) it gets wet
5. 5.🧺 Do we need turmeric powder for growing salt crystals? (a) needed (b) not needed
6. 6.🔍 Which is the odd one out? (a) reading the message (b) letting the paper dry (c) writing the message (d) ironing the paper
7. 7.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) it fizzes (d) few or no crystals
8. 8.🪴 Which part of a plant does this job: take in water from soil? (a) stem (b) flower (c) leaves (d) roots
9. 9.True or false: a battery cell is needed for the fizzy balloon. (a) True (b) False
10. 10.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.🔍 Which is the odd one out? (a) putting the iron away (b) plugging in the iron (c) cutting the lemon (d) reading the message
12. 12.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
13. 13.🛟 Which safety rule fits the fizzy balloon experiment? (a) shake it near your face (b) keep it away from eyes (c) seal it in a glass jar (d) put it in your mouth
14. 14.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) sunlight (c) a few hours (d) a magnet
15. 15.True or false: a spoon is needed for growing salt crystals. (a) False (b) True
16. 16.🌱 Will these sprout: wet seeds in the dark? (a) does not sprout (b) sprouts
17. 17.True or false: cooking oil dissolves in water. (a) False (b) True
18. 18.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the flowers (c) the roots (d) the fruits
19. 19.True or false: a mirror is needed for the turmeric test. (a) True (b) False
20. 20.🧺 Which of these is needed for the secret lemon message? (a) a small bowl (b) a balloon (c) turmeric powder (d) a battery cell
21. 21.🔮 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
22. 22.🫧 Which of these is an acid? (a) lemon juice (b) sugar water (c) baking soda water (d) soap solution
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same muddy water
24. 24.🧺 Do we need vinegar for the leafy bag test? (a) needed (b) not needed
25. 25.⚖️ 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
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) a clean glass (c) a balloon (d) muddy water
28. 28.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) helium (c) hydrogen (d) carbon dioxide
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same glass is kept the same. (a) False (b) True
30. 30.True or false: ironing the paper is a job for an adult. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) salt water (b) plain water (c) orange juice (d) sugar water
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) the amount poured (c) how clear the water is (d) the same muddy water
33. 33.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) a balloon (c) a mirror (d) warm water
34. 34.🔍 Which is the odd one out? (a) milk turning to curd (b) folding paper (c) baking a cake (d) rusting iron
35. 35.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is kept the same. (a) True (b) False
36. 36.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) True (b) False
37. 37.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) melting ice (c) folding paper (d) baking a cake
38. 38.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
39. 39.🧺 Do we need a magnet for the yeast balloon? (a) not needed (b) needed
40. 40.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) fresh cream (c) cold water to rinse (d) yeast

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