Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 809 · 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: water is needed for the turmeric test. (a) True (b) False
2. 2.🎈 Why does the balloon blow up? (a) gas is made inside (b) the bottle shrinks (c) vinegar is hot (d) outside air gets in
3. 3.True or false: soap solution is neutral. (a) True (b) False
4. 4.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
5. 5.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) it turns to honey (c) very little fizzing (d) the balloon bursts
6. 6.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) lemon juice (d) soap solution
7. 7.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) how many seeds sprout (c) the same place
8. 8.True or false: a magnet is not needed for making butter. (a) False (b) True
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is what we measure. (a) True (b) False
10. 10.🫧 Which of these is a base? (a) plain water (b) lemon juice (c) soap solution (d) curd
11. 11.True or false: a comb is not needed for the fizzy balloon. (a) False (b) True
12. 12.🪴 Which of these is a job of the flower? (a) make seeds (b) hold up the leaves (c) take in water from soil (d) give out water vapour
13. 13.🔍 Which is the odd one out? (a) milk turning to curd (b) folding paper (c) melting ice (d) dissolving salt
14. 14.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sand (b) yes, all of it (c) no, salt passes through (d) it turns to sugar
15. 15.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a balloon (c) turmeric powder (d) yeast
16. 16.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a mirror (c) white paper (d) a cotton bud
17. 17.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a balloon (c) turmeric powder (d) salt
18. 18.🧺 Which of these is not needed for sprouting seeds? (a) water (b) yeast (c) cotton wool (d) a small bowl
19. 19.📘 What is yeast? (a) a kind of salt (b) a kind of stone (c) a tiny living fungus (d) a kind of sugar
20. 20.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we keep it the same (c) we measure it
23. 23.🪴 Which of these is a job of the leaves? (a) hold the plant in soil (b) give out water vapour (c) take in water from soil (d) hold up the leaves
24. 24.True or false: a battery cell is needed for the fizzy balloon. (a) False (b) True
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a magnet (c) a balloon (d) vinegar
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) a grown-up (c) nobody needs to (d) the youngest child
27. 27.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) True (b) False
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we keep it the same (b) we measure it (c) we change it
29. 29.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
30. 30.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) a tray for spills (c) an empty bottle (d) a balloon
31. 31.📘 Is the fizzing a sign that a new substance is made? (a) no, nothing changes (b) it is only dissolving (c) yes, a new gas forms (d) it is only melting
32. 32.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
33. 33.🧈 Before the butter appears, what does the cream turn into? (a) thick whipped cream (b) powder (c) ice (d) clear water
34. 34.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
35. 35.🧂 Which of these dissolves in water? (a) cooking oil (b) baking soda (c) sand (d) chalk powder
36. 36.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
37. 37.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) cold water to rinse (c) a magnet (d) fresh cream
38. 38.True or false: sugar is something yeast needs. (a) False (b) True
39. 39.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False

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