Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 900 · 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.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a clear plastic bag (c) a mirror (d) a potted plant
2. 2.🪴 Which part of a plant does this job: hold up the leaves? (a) roots (b) leaves (c) flower (d) stem
3. 3.🌱 Which of these is not needed for a seed to sprout? (a) warmth (b) air (c) salt (d) water
4. 4.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
5. 5.True or false: soap solution is an acid. (a) True (b) False
6. 6.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is the one thing we change. (a) False (b) True
7. 7.🫧 Which of these is a base? (a) vinegar (b) baking soda water (c) curd (d) sugar water
8. 8.True or false: cooking oil does not dissolve in water. (a) True (b) False
9. 9.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a shallow dish (c) warm water (d) a magnet
10. 10.True or false: water is not needed for sprouting seeds. (a) False (b) True
11. 11.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
12. 12.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a balloon (c) white paper (d) a small bowl
13. 13.🔍 Which is the odd one out? (a) soil (b) water (c) salt (d) sunlight
14. 14.True or false: baking soda is needed for the fizzy balloon. (a) True (b) False
15. 15.True or false: plain water turns turmeric reddish-brown. (a) True (b) False
16. 16.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) turmeric powder (c) a potted plant (d) a few hours
17. 17.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) how hard we shake (c) the cream temperature (d) the same jar
19. 19.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) yeast (b) fresh cream (c) a jar with a tight lid (d) a timer
20. 20.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is what we measure. (a) False (b) True
21. 21.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) a battery cell (d) warm water
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) salt water (b) plain water (c) vinegar (d) soap solution
23. 23.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) put it in your mouth (c) keep it for a month (d) pour it down the sink
24. 24.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
25. 25.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we keep it the same (b) we change it (c) we measure it
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we measure it (b) we keep it the same (c) we change it
27. 27.🍋 Which of these steps is a job for an adult? (a) writing the message (b) dipping the cotton bud (c) ironing the paper (d) letting the paper dry
28. 28.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) water (c) a mirror (d) a magnet
29. 29.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the amount poured
30. 30.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
31. 31.🧺 Do we need a battery cell for the secret lemon message? (a) needed (b) not needed
32. 32.True or false: table salt does not dissolve in water. (a) False (b) True
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a cotton bud (c) an adult with an iron (d) a mirror
34. 34.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
35. 35.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
36. 36.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a battery cell (c) dry yeast (d) a balloon
37. 37.True or false: lemon juice is a base. (a) False (b) True
38. 38.True or false: a comb is needed for the turmeric test. (a) False (b) True
39. 39.True or false: vinegar is something yeast does not need. (a) False (b) True
40. 40.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) a mirror (d) a funnel

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