Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 823 · 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.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
2. 2.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a mirror (c) a small bowl (d) water
3. 3.True or false: chaff from wheat grain is done by filtering. (a) True (b) False
4. 4.🧺 Which of these is not needed for making butter? (a) a bowl (b) a balloon (c) fresh cream (d) a jar with a tight lid
5. 5.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) True (b) False
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a piece of string (d) a magnet
7. 7.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) water (c) a small bowl (d) a balloon
8. 8.True or false: cold water to rinse is not needed for making butter. (a) False (b) True
9. 9.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we measure it (b) we keep it the same (c) we change it
11. 11.True or false: baking soda water is an acid. (a) False (b) True
12. 12.🫗 Which of these is done by handpicking? (a) small stones from dal (b) gravel from fine sand (c) bran from wheat flour (d) tea leaves from tea
13. 13.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) more butter forms (c) it turns blue (d) it turns to cheese
14. 14.🫗 How do we separate bad grains from rice? (a) handpicking (b) evaporating (c) filtering (d) sieving
15. 15.True or false: a balloon is not needed for the fizzy balloon. (a) False (b) True
16. 16.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a pulley (c) an indicator (d) a prism
17. 17.🔍 Which is the odd one out? (a) sugar water (b) tamarind water (c) soap solution (d) lemon juice
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) clearer (b) salty (c) hot (d) muddier
19. 19.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the same place (b) wet or dry cotton (c) how many seeds sprout
20. 20.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we measure it (c) we keep it the same
21. 21.True or false: tamarind water keeps turmeric yellow. (a) False (b) True
22. 22.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) sand and pebbles (c) cotton or cloth (d) yeast
23. 23.True or false: hold up the leaves is a job of the roots. (a) True (b) False
24. 24.🔍 Which is the odd one out? (a) writing the message (b) plugging in the iron (c) dipping the cotton bud (d) letting the paper dry
25. 25.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
26. 26.🧺 Which of these is not needed for the secret lemon message? (a) turmeric powder (b) an adult with an iron (c) lemon juice (d) a small bowl
27. 27.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the number of seeds (b) wet or dry cotton (c) the same place (d) the same bowls
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same muddy water
29. 29.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
30. 30.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) False (b) True
31. 31.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: time to make butter is the one thing we change. (a) False (b) True
32. 32.🧺 Which of these is needed for the secret lemon message? (a) a small bowl (b) a battery cell (c) yeast (d) a magnet
33. 33.🔍 Which is the odd one out? (a) detergent water (b) salt water (c) plain water (d) sugar water
34. 34.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
35. 35.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the filter traps mud (d) the water evaporates
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we keep it the same (c) we change it
37. 37.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) letting the paper dry (c) plugging in the iron (d) cutting the lemon
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the same funnel (c) the filter material (d) the same muddy water
39. 39.🧺 Which of these is not needed for sprouting seeds? (a) moong seeds (b) a small bowl (c) yeast (d) water
40. 40.🔮 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

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