Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 890 · 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.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) warm water (b) a balloon (c) a small bottle (d) a magnet
2. 2.🧈 Can this change be undone: folding paper? (a) can be undone (b) cannot be undone
3. 3.⚖️ 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
4. 4.🧺 Do we need a balloon for the fizzy balloon? (a) needed (b) not needed
5. 5.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) it grows faster (c) the yeast is killed (d) it turns to sugar
6. 6.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
7. 7.🧺 Which of these is not needed for the secret lemon message? (a) a balloon (b) lemon juice (c) a small bowl (d) a cotton bud
8. 8.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
9. 9.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) the youngest child (c) any child (d) only an adult
10. 10.🛟 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
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) spoons of baking soda (c) the amount of vinegar (d) the kind of balloon
12. 12.True or false: a balloon is not needed for the turmeric test. (a) True (b) False
13. 13.📘 What do we call plants giving out water vapour from their leaves? (a) reflection (b) transpiration (c) germination (d) digestion
14. 14.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) a piece of string (d) yeast
15. 15.True or false: take in water from soil is a job of the stem. (a) False (b) True
16. 16.🧺 Do we need cotton or cloth for the muddy water filter? (a) not needed (b) needed
17. 17.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: how hard we shake is what we measure. (a) True (b) False
18. 18.🧈 Can this change be undone: cooking an egg? (a) cannot be undone (b) can be undone
19. 19.🧺 Do we need turmeric powder for making butter? (a) not needed (b) needed
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the kind of juice (c) the same cotton bud (d) the same paper
21. 21.🍋 Which of these steps is a job for an adult? (a) letting the paper dry (b) dipping the cotton bud (c) ironing the paper (d) writing the message
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same glass”? (a) we change it (b) we measure it (c) we keep it the same
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) True (b) False
24. 24.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a balloon (c) a battery cell (d) warm water
25. 25.True or false: cutting the lemon is a job for an adult. (a) False (b) True
26. 26.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
27. 27.True or false: plain water is an acid. (a) True (b) False
28. 28.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) False (b) True
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) white paper strips (c) a dropper or spoon (d) a magnet
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of water (c) sunny or shady place (d) the amount of salt
31. 31.🧺 Which of these is needed for the fizzy balloon? (a) a seed (b) a comb (c) a magnet (d) a balloon
32. 32.🧺 Do we need a battery cell for the fizzy balloon? (a) needed (b) not needed
33. 33.True or false: a magnet is needed for the turmeric test. (a) False (b) True
34. 34.True or false: baking soda water is a base. (a) False (b) True
35. 35.🧈 Which of these is a change that can be undone? (a) freezing water (b) milk turning to curd (c) baking a cake (d) cooking an egg
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
37. 37.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) amount of water drops (b) the size of the plant (c) the kind of plant (d) sun or shade
38. 38.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True
39. 39.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a mirror (c) a potted plant (d) turmeric powder
40. 40.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we change it (b) we keep it the same (c) we measure it

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