Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 582 · 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.True or false: boiled seeds sprouts in a few days. (a) False (b) True
2. 2.🪴 Which of these is a job of the leaves? (a) make food in sunlight (b) hold the plant in soil (c) hold up the leaves (d) carry water upward
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we keep it the same (b) we measure it (c) we change it
4. 4.🛟 Why must the jar lid be screwed on tightly? (a) so it gets hot (b) so it turns yellow (c) so air gets out (d) so cream does not spill
5. 5.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they react (b) they become magnets (c) they float apart (d) they freeze
6. 6.True or false: a clean glass is not needed for the muddy water filter. (a) True (b) False
7. 7.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
8. 8.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a few hours (c) sunlight (d) a clear plastic bag
9. 9.🍞 Why does yeast work slowly in cold water? (a) cold slows yeast down (b) cold kills sugar (c) cold water is heavy (d) cold makes it pink
10. 10.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) turmeric powder (c) yeast (d) lemon juice
11. 11.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) use only kitchen items (d) mix bathroom cleaners
12. 12.True or false: white paper is not needed for the secret lemon message. (a) False (b) True
13. 13.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
14. 14.🌱 Which of these does not sprout? (a) seeds on dry cotton (b) seeds on wet cotton (c) wet seeds by a window (d) wet seeds in the dark
15. 15.⚖️ 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 keep it the same (c) we measure it
16. 16.🛟 Where should you keep the crystal dish while it dries? (a) next to the baby (b) on the edge of a table (c) safe from small children (d) in a busy doorway
17. 17.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) turmeric powder (d) sunlight
18. 18.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) water (c) moong seeds (d) yeast
19. 19.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is the one thing we change. (a) True (b) False
20. 20.🟡 Turmeric paper meets plain water. What happens? (a) stays yellow (b) turns reddish-brown
21. 21.True or false: hold the plant in soil is a job of the leaves. (a) True (b) False
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is kept the same. (a) True (b) False
23. 23.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
24. 24.True or false: lemon juice is a base. (a) True (b) False
25. 25.🛟 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
26. 26.True or false: sugar water is neutral. (a) True (b) False
27. 27.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
29. 29.True or false: seeds in the freezer does not sprout. (a) False (b) True
30. 30.🍋 Why can’t you see the lemon writing once it dries? (a) dry juice is see-through (b) the paper ate it (c) the ink is magnetic (d) it turned into air
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we change it (c) we measure it
32. 32.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
33. 33.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) bright blue (c) it stays white (d) green
34. 34.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
35. 35.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we measure it (b) we change it (c) we keep it the same
36. 36.True or false: hold up the leaves is a job of the flower. (a) True (b) False
37. 37.🔍 What do you see after shaking cream in a jar for a long time? (a) lumps of butter (b) bubbles of gas (c) clear water only (d) sugar crystals
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
39. 39.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a small bottle (c) a balloon (d) turmeric powder
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a balloon (d) cotton or cloth

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