Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 566 · 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.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the leaves (c) the flowers (d) the fruits
2. 2.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) wash your hands (c) skip washing (d) lick your fingers
3. 3.🫧 Is baking soda water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
4. 4.🧺 Do we need lemon juice for the turmeric test? (a) not needed (b) needed
5. 5.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) soil (c) water (d) sugar
6. 6.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) take in water from soil (c) hold up the leaves (d) give out water vapour
7. 7.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) a mirror (c) cold water to rinse (d) a bowl
8. 8.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it makes salt (c) it turns pink (d) it is much faster
9. 9.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
10. 10.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) mud from water (c) small stones from dal (d) bad grains from rice
11. 11.🧺 Which of these is not needed for the fizzy balloon? (a) vinegar (b) a tray for spills (c) baking soda (d) a mirror
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) True (b) False
13. 13.🫗 Which of these is done by handpicking? (a) gravel from fine sand (b) small stones from dal (c) husk from rice grain (d) sugar from sugar water
14. 14.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) True (b) False
15. 15.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) wash hands afterwards (d) nothing is needed
16. 16.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) False (b) True
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the same dish (b) the amount of salt (c) the kind of salt (d) sunny or shady place
18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a small bottle (c) dry yeast (d) a paper clip
19. 19.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
20. 20.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) detergent water (c) sugar water (d) baking soda water
21. 21.🫧 Which of these is a base? (a) salt water (b) plain water (c) baking soda water (d) orange juice
22. 22.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
23. 23.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
24. 24.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
25. 25.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it turns blue (c) it shrinks (d) there is no change
26. 26.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) a seed (c) a battery cell (d) a funnel or spoon
27. 27.⚖️ Fair test — do seeds need water to sprout? What do we do with “how many seeds sprout”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it can burn skin (c) it is sticky (d) it is cold
29. 29.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) sugar (c) salt (d) warmth
30. 30.True or false: browning lemon ink is a change that can be undone. (a) False (b) True
31. 31.🔮 The fizzing stops after a while. Why? (a) the gas froze (b) the balloon got cold (c) the bottle got tired (d) an ingredient ran out
32. 32.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) a balloon (c) a seed (d) a battery cell
33. 33.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a battery cell (c) a comb (d) a tray for spills
34. 34.True or false: a mirror is needed for growing salt crystals. (a) False (b) True
35. 35.🧺 Which of these is needed for making butter? (a) turmeric powder (b) fresh cream (c) a battery cell (d) a magnet
36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🔍 Which is the odd one out? (a) warmth (b) air (c) sugar (d) water
38. 38.🔍 Which is the odd one out? (a) vinegar (b) salt water (c) tamarind water (d) curd
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) musical (c) magnetic (d) chemical

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