Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 262 · 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 — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of yeast (b) the water temperature (c) size of the balloon (d) the amount of water
2. 2.🧺 Which of these is needed for making butter? (a) a balloon (b) a battery cell (c) a jar with a tight lid (d) yeast
3. 3.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a mirror (b) a small bowl (c) moong seeds (d) a few days
4. 4.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) a comb (c) water (d) white paper strips
5. 5.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
6. 6.🪴 Which of these is a job of the flower? (a) make seeds (b) hold up the leaves (c) make food in sunlight (d) hold the plant in soil
7. 7.🧺 Do we need water for sprouting seeds? (a) not needed (b) needed
8. 8.True or false: cutting the lemon is a job a child can do. (a) False (b) True
9. 9.🔍 Which is the odd one out? (a) dipping the cotton bud (b) plugging in the iron (c) putting the iron away (d) ironing the paper
10. 10.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
11. 11.True or false: fresh cream is not needed for making butter. (a) True (b) False
12. 12.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a jar with a tight lid (b) turmeric powder (c) cold water to rinse (d) fresh cream
13. 13.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it turns to sugar (b) the yeast is killed (c) it glows (d) it grows faster
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) a battery cell (c) a funnel (d) muddy water
15. 15.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
16. 16.True or false: take in water from soil is a job of the roots. (a) False (b) True
17. 17.🧺 Which of these is needed for the leafy bag test? (a) a battery cell (b) a magnet (c) a potted plant (d) turmeric powder
18. 18.True or false: fresh cream is needed for making butter. (a) True (b) False
19. 19.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
20. 20.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) lemon juice (c) yeast (d) a cotton bud
21. 21.🛟 After the yeast experiment, what should you do with the mixture? (a) throw it at a wall (b) pour it down the sink (c) keep it for a month (d) put it in your mouth
22. 22.🧈 What is the watery liquid left after the butter forms? (a) vinegar (b) honey (c) oil (d) buttermilk
23. 23.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we keep it the same (b) we change it (c) we measure it
24. 24.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) the cool cloudy day (b) neither of them (c) the hot sunny day (d) both the same
25. 25.🫧 Is tamarind water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
26. 26.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) the youngest child (c) a grown-up (d) a friend who is running
27. 27.🍋 Which of these steps is a job a child can do? (a) putting the iron away (b) ironing the paper (c) dipping the cotton bud (d) plugging in the iron
28. 28.True or false: letting the paper dry is a job a child can do. (a) True (b) False
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the size of the plant is the one thing we change. (a) True (b) False
30. 30.True or false: turmeric powder is not needed for sprouting seeds. (a) False (b) True
31. 31.🧈 Why does shaking cream make butter? (a) shaking adds salt (b) the lid is warm (c) the jar adds butter (d) fat bits stick together
32. 32.True or false: turmeric powder is not needed for the yeast balloon. (a) False (b) True
33. 33.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) reddish-brown (b) it stays white (c) green (d) bright blue
34. 34.True or false: seeds on dry cotton does not sprout. (a) False (b) True
35. 35.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
36. 36.🧺 Which of these is not needed for the leafy bag test? (a) sunlight (b) a few hours (c) a clear plastic bag (d) vinegar
37. 37.True or false: a jar with a tight lid is needed for making butter. (a) True (b) False
38. 38.True or false: warmth is not needed for a seed to sprout. (a) True (b) False
39. 39.🪴 Which of these is a job of the roots? (a) make seeds (b) make food in sunlight (c) carry water upward (d) take in water from soil
40. 40.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) lemon juice (c) white paper strips (d) a balloon

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