Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 918 · 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: take in water from soil is a job of the roots. (a) True (b) False
2. 2.🔍 Which is the odd one out? (a) air (b) warmth (c) soil (d) water
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we change it (b) we measure it (c) we keep it the same
4. 4.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a balloon (b) water (c) a few days (d) cotton wool
5. 5.True or false: melting butter is a change that cannot be undone. (a) False (b) True
6. 6.🍞 Does yeast need time to make gas? (a) yeast needs it (b) yeast does not need it
7. 7.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) True (b) False
8. 8.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
9. 9.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
10. 10.🧂 Which of these does not dissolve in water? (a) sugar (b) chalk powder (c) table salt (d) baking soda
11. 11.🔍 Which is the odd one out? (a) sunlight (b) warmth (c) soil (d) sugar
12. 12.🧺 Do we need yeast for sprouting seeds? (a) needed (b) not needed
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a magnet (c) muddy water (d) cotton or cloth
14. 14.🛟 After the yeast experiment, what should you do with the mixture? (a) put it in your mouth (b) pour it down the sink (c) keep it for a month (d) throw it at a wall
15. 15.🛟 Why must the jar lid be screwed on tightly? (a) so cream does not spill (b) so air gets out (c) so it gets hot (d) so it turns yellow
16. 16.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) sugar (c) warmth (d) salt
17. 17.True or false: water is needed for the turmeric test. (a) False (b) True
18. 18.🫧 Which of these is neutral? (a) baking soda water (b) sugar water (c) soap solution (d) orange juice
19. 19.🪴 Through which part does a plant take in water from the soil? (a) the flowers (b) the fruits (c) the roots (d) the leaves
20. 20.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) both stay behind (d) leaves stay behind
21. 21.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is kept the same. (a) True (b) False
22. 22.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it turns blue (b) it shrinks (c) it grows bigger (d) there is no change
23. 23.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) liquid crystals (b) bigger crystals (c) no crystals (d) smaller crystals
24. 24.True or false: turmeric powder is not needed for the secret lemon message. (a) True (b) False
25. 25.True or false: water is not needed for the turmeric test. (a) False (b) True
26. 26.True or false: a piece of string is needed for growing salt crystals. (a) True (b) False
27. 27.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a fruit (c) a flower (d) a thorn
28. 28.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) yeast (c) fresh cream (d) a bowl
29. 29.⚖️ Fair test — do seeds need water to sprout? True or false: the same bowls is what we measure. (a) True (b) False
30. 30.🎈 What blows up the balloon in the yeast experiment? (a) carbon dioxide gas (b) air from outside (c) smoke (d) steam
31. 31.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
32. 32.🧈 What is the watery liquid left after the butter forms? (a) honey (b) oil (c) buttermilk (d) vinegar
33. 33.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
34. 34.🫧 Which of these is an acid? (a) sugar water (b) plain water (c) curd (d) baking soda water
35. 35.⚖️ 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 keep it the same (b) we change it (c) we measure it
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it
37. 37.🍋 Secret message: who does this step — dipping the cotton bud? (a) a child can do it (b) an adult does it
38. 38.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) the youngest child (c) nobody needs to (d) a grown-up
39. 39.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) salt (d) time
40. 40.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we keep it the same (b) we measure it (c) we change it

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