Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 203 · 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.🫗 How do we separate gravel from fine sand? (a) filtering (b) handpicking (c) winnowing (d) sieving
2. 2.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) baking soda water (d) orange juice
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the cool cloudy day (c) both the same (d) the hot sunny day
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the kind of balloon (b) the amount of vinegar (c) spoons of baking soda (d) the same bottle
6. 6.🫗 How do we separate chaff from wheat grain? (a) winnowing (b) filtering (c) sieving (d) evaporating
7. 7.True or false: putting the iron away is a job for an adult. (a) False (b) True
8. 8.True or false: hold the plant in soil is a job of the leaves. (a) True (b) False
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) False (b) True
10. 10.True or false: sand does not dissolve in water. (a) False (b) True
11. 11.🔍 Which is the odd one out? (a) air (b) warmth (c) water (d) soil
12. 12.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
13. 13.True or false: a funnel or spoon is needed for the fizzy balloon. (a) True (b) False
14. 14.🫗 Is filtered pond water safe to drink? (a) no, germs may stay (b) yes, if it is clear (c) yes, always (d) yes, if it is cold
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we measure it (b) we change it (c) we keep it the same
16. 16.🔍 Which is the odd one out? (a) cutting the lemon (b) dipping the cotton bud (c) ironing the paper (d) plugging in the iron
17. 17.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
18. 18.🪴 Which part of a plant does this job: make seeds? (a) leaves (b) flower (c) stem (d) roots
19. 19.True or false: yeast is not needed for the leafy bag test. (a) False (b) True
20. 20.🫧 Is curd an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
22. 22.True or false: white paper is not needed for the secret lemon message. (a) True (b) False
23. 23.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) rinse with clean water (c) add baking soda (d) rub it hard
24. 24.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we measure it (b) we change it (c) we keep it the same
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) an empty bottle (b) baking soda (c) a tray for spills (d) a mirror
26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a battery cell (b) dry yeast (c) warm water (d) a balloon
27. 27.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) melting ice (d) cooking an egg
28. 28.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we change it (c) we keep it the same
29. 29.True or false: a magnet is not needed for the yeast balloon. (a) True (b) False
30. 30.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a clear plastic bag (c) a few hours (d) vinegar
31. 31.🧺 Which of these is not needed for the leafy bag test? (a) a potted plant (b) a clear plastic bag (c) sunlight (d) turmeric powder
32. 32.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is smaller (b) it turns to bread (c) the balloon is bigger (d) it shrinks to nothing
33. 33.True or false: a mirror is not needed for growing salt crystals. (a) False (b) True
34. 34.🍋 Why does the lemon writing turn brown with heat? (a) the iron is brown (b) paper turns lemony (c) heat adds colour (d) the juice scorches first
35. 35.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
36. 36.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
37. 37.True or false: a balloon is not needed for the muddy water filter. (a) False (b) True
38. 38.🧺 Do we need a magnet for the fizzy balloon? (a) needed (b) not needed
39. 39.🧺 Which of these is needed for the fizzy balloon? (a) vinegar (b) a comb (c) sugar (d) a mirror
40. 40.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) it fills with soil (b) much less water (c) exactly the same (d) much more water

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