Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 987 · 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 is the odd one out? (a) lemon juice (b) vinegar (c) curd (d) sugar water
2. 2.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) a mirror (d) cotton or cloth
3. 3.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
4. 4.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the kind of seeds (b) wet or dry cotton (c) the same bowls (d) how many seeds sprout
5. 5.📘 What do we call a seed starting to grow? (a) germination (b) pollination (c) evaporation (d) condensation
6. 6.🌱 What comes out of a moong seed first when it sprouts? (a) a fruit (b) a thorn (c) a tiny root (d) a flower
7. 7.🫗 Which of these is done by filtering? (a) husk from rice grain (b) chaff from wheat grain (c) bran from wheat flour (d) tea leaves from tea
8. 8.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the cream temperature (b) the amount of cream (c) the same jar (d) time to make butter
9. 9.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) yeast (c) a spoon (d) turmeric powder
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we keep it the same (b) we measure it (c) we change it
11. 11.⚖️ 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 measure it (c) we change it
12. 12.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a magnet (b) warm water (c) a piece of string (d) a spoon
13. 13.🧺 Which of these is needed for making butter? (a) a balloon (b) a mirror (c) turmeric powder (d) a jar with a tight lid
14. 14.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we keep it the same (b) we change it (c) we measure it
15. 15.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is the one thing we change. (a) True (b) False
16. 16.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) the balloon is bigger (b) it shrinks to nothing (c) it turns to bread (d) the balloon is smaller
17. 17.🫗 How do we separate mud from water? (a) filtering (b) evaporating (c) handpicking (d) winnowing
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
19. 19.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) with a hot glue gun (c) as tight as possible (d) gently, not too tight
20. 20.True or false: soap solution is not needed for the turmeric test. (a) True (b) False
21. 21.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) the same dish (b) the kind of salt (c) the amount of water (d) days to see crystals
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) the iron setting (c) how dark the writing is
24. 24.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your school uniform (c) your best clothes (d) an old shirt or apron
25. 25.True or false: a seed is needed for the fizzy balloon. (a) False (b) True
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the amount of cream (b) time to make butter (c) the cream temperature
27. 27.🪴 Which of these is a job of the leaves? (a) carry water upward (b) give out water vapour (c) make seeds (d) hold up the leaves
28. 28.🧺 Which of these is not needed for the leafy bag test? (a) a battery cell (b) a clear plastic bag (c) sunlight (d) a potted plant
29. 29.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a potted plant (c) vinegar (d) a clear plastic bag
30. 30.🛟 The water for the yeast should be ___. (a) very salty (b) ice cold (c) boiling hot (d) warm, not hot
31. 31.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it wilts and droops (c) it flowers more (d) it grows faster
32. 32.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child
33. 33.True or false: a cotton bud is needed for the secret lemon message. (a) True (b) False
34. 34.⚖️ 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) size of the balloon (b) the same bottles (c) the amount of water (d) the water temperature
35. 35.🌱 Is air needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
36. 36.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
37. 37.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.True or false: moong seeds is not needed for sprouting seeds. (a) False (b) True
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) lemon juice (c) a dropper or spoon (d) yeast
40. 40.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral

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