Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 597 · 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.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🔍 Which is the odd one out? (a) dissolving salt (b) cooking an egg (c) folding paper (d) melting butter
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is the one thing we change. (a) False (b) True
4. 4.🫧 Which of these is an acid? (a) curd (b) plain water (c) detergent water (d) soap solution
5. 5.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the amount of salt (c) days to see crystals (d) the same dish
6. 6.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
7. 7.🪴 Which part of a plant does this job: take in water from soil? (a) flower (b) roots (c) stem (d) leaves
8. 8.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) keep it away from eyes (c) seal it in a glass jar (d) shake it near your face
9. 9.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) a bowl (c) cold water to rinse (d) a jar with a tight lid
11. 11.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a funnel or spoon (c) a battery cell (d) baking soda
12. 12.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
13. 13.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a few hours (c) a battery cell (d) sunlight
14. 14.🪴 Which of these is a job of the roots? (a) give out water vapour (b) hold the plant in soil (c) make food in sunlight (d) hold up the leaves
15. 15.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it will not break (c) it is heavier (d) it is hotter
16. 16.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) wet or dry cotton (b) the same place (c) the same bowls (d) how many seeds sprout
17. 17.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
18. 18.🧺 Do we need a balloon for growing salt crystals? (a) needed (b) not needed
19. 19.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) it stays white (c) bright blue (d) reddish-brown
20. 20.True or false: dissolving salt is a change that can be undone. (a) False (b) True
21. 21.📘 What is yeast? (a) a kind of stone (b) a tiny living fungus (c) a kind of salt (d) a kind of sugar
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the kind of juice is kept the same. (a) True (b) False
23. 23.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
24. 24.🔍 Which is the odd one out? (a) sugar (b) vinegar (c) warm water (d) time
25. 25.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) water evaporates (c) salt grows roots (d) salt eats water
26. 26.🧺 Do we need sugar for the fizzy balloon? (a) not needed (b) needed
27. 27.True or false: a magnet is needed for the muddy water filter. (a) False (b) True
28. 28.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) baking soda water (d) plain water
29. 29.⚖️ 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) the size of the plant (b) amount of water drops (c) sun or shade
30. 30.🔍 Which is the odd one out? (a) chalk powder (b) glucose powder (c) small pebbles (d) sawdust
31. 31.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the cream temperature (b) how hard we shake (c) the amount of cream (d) time to make butter
32. 32.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) turmeric powder (c) vinegar (d) a few hours
33. 33.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) False (b) True
34. 34.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a balloon (c) turmeric powder (d) a dropper or spoon
35. 35.True or false: a magnet is needed for the fizzy balloon. (a) False (b) True
36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) sugar (d) a magnet
37. 37.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) the filter material (c) how clear the water is (d) the amount poured
38. 38.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) warm water (c) a small bottle (d) a comb
39. 39.⚖️ 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) how clear the water is (c) the same glass (d) the same muddy water
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we keep it the same (b) we change it (c) we measure it

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