Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 641 · 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.🧺 Do we need a balloon for making butter? (a) not needed (b) needed
2. 2.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it wilts and droops (d) it turns blue
3. 3.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) helium (b) carbon dioxide (c) hydrogen (d) oxygen
4. 4.True or false: a mirror is not needed for the secret lemon message. (a) False (b) True
5. 5.🪴 Which of these is a job of the stem? (a) take in water from soil (b) hold up the leaves (c) hold the plant in soil (d) give out water vapour
6. 6.True or false: a magnet is needed for growing salt crystals. (a) True (b) False
7. 7.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
8. 8.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) turmeric powder (c) yeast (d) a potted plant
9. 9.True or false: lemon juice is not needed for the secret lemon message. (a) False (b) True
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the kind of juice (b) the same cotton bud (c) how dark the writing is (d) the ironing time
11. 11.True or false: moong seeds is not needed for sprouting seeds. (a) False (b) True
12. 12.🪴 Which part of a plant does this job: make food in sunlight? (a) flower (b) roots (c) stem (d) leaves
13. 13.True or false: vinegar is an acid. (a) False (b) True
14. 14.🧺 Do we need a shallow dish for growing salt crystals? (a) needed (b) not needed
15. 15.🫧 Which of these is a base? (a) vinegar (b) orange juice (c) detergent water (d) salt water
16. 16.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is kept the same. (a) False (b) True
17. 17.True or false: ironing the paper is a job for an adult. (a) False (b) True
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we keep it the same (c) we change it
19. 19.🔍 Which is the odd one out? (a) melting butter (b) browning lemon ink (c) melting ice (d) dissolving salt
20. 20.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) writing the message (c) cutting the lemon (d) putting the iron away
21. 21.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) no butter forms (c) it turns blue (d) it turns to cheese
22. 22.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) wash hands afterwards (c) nothing is needed (d) lick your fingers
23. 23.True or false: vinegar is something yeast does not need. (a) False (b) True
24. 24.🔍 Which is the odd one out? (a) water (b) warmth (c) sugar (d) air
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) sun or shade (c) the time we wait
26. 26.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) a spoon (c) a balloon (d) salt
27. 27.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) with sharp wire (c) gently, not too tight (d) as tight as possible
28. 28.🔍 Which is the odd one out? (a) cooking an egg (b) folding paper (c) milk turning to curd (d) browning lemon ink
29. 29.🔮 Can the brown writing go back to being invisible? (a) no, it stays brown (b) yes, if shaken (c) yes, in the dark (d) yes, if cooled
30. 30.True or false: a balloon is not needed for sprouting seeds. (a) False (b) True
31. 31.🧂 Which of these dissolves in water? (a) cooking oil (b) glucose powder (c) sawdust (d) small pebbles
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we keep it the same (c) we measure it
33. 33.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) True (b) False
35. 35.True or false: a clear plastic bag is not needed for the leafy bag test. (a) True (b) False
36. 36.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a battery cell (c) a cotton bud (d) a balloon
37. 37.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) warm water (c) a comb (d) a magnet
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) False (b) True
39. 39.True or false: a battery cell is not needed for the muddy water filter. (a) False (b) True
40. 40.True or false: curd is a base. (a) True (b) False

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