Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 555 · 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.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a grown-up (c) a friend who is running (d) the youngest child
2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
3. 3.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
4. 4.🫧 Which of these is neutral? (a) orange juice (b) plain water (c) baking soda water (d) tamarind water
5. 5.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) freezing water (c) milk turning to curd (d) folding paper
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we keep it the same (c) we measure it
7. 7.True or false: make seeds is a job of the roots. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) writing the message (b) dipping the cotton bud (c) plugging in the iron (d) reading the message
9. 9.⚖️ 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 measure it (b) we keep it the same (c) we change it
10. 10.True or false: plain water is a base. (a) True (b) False
11. 11.True or false: turmeric powder is not needed for growing salt crystals. (a) True (b) False
12. 12.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a magnet (b) a rubber band (c) a clear plastic bag (d) sunlight
13. 13.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it gets wet (c) it changes colour (d) it can block breathing
14. 14.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) sugar (b) a funnel or spoon (c) vinegar (d) an empty bottle
15. 15.🫧 Which of these is a base? (a) curd (b) orange juice (c) baking soda water (d) salt water
16. 16.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) how many seeds sprout (c) the same bowls (d) the same place
17. 17.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) in a busy doorway (c) next to the baby (d) safe from small children
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
19. 19.True or false: a small bowl is not needed for the secret lemon message. (a) True (b) False
20. 20.🪴 Through which part does a plant take in water from the soil? (a) the leaves (b) the flowers (c) the fruits (d) the roots
21. 21.True or false: fresh cream is not needed for making butter. (a) False (b) True
22. 22.🧺 Which of these is needed for making butter? (a) cold water to rinse (b) a mirror (c) a magnet (d) turmeric powder
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
24. 24.True or false: a mirror is not needed for the yeast balloon. (a) True (b) False
25. 25.🌱 What comes out of a moong seed first when it sprouts? (a) a tiny root (b) a fruit (c) a flower (d) a thorn
26. 26.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) lemon juice (c) a balloon (d) yeast
27. 27.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) a balloon (c) a magnet (d) a small bottle
28. 28.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we keep it the same (c) we change it
29. 29.True or false: detergent water is neutral. (a) True (b) False
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the amount of cream (c) the cream temperature
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a battery cell (c) an empty bottle (d) a funnel or spoon
32. 32.🧺 Which of these is needed for the yeast balloon? (a) sugar (b) a mirror (c) a battery cell (d) a comb
33. 33.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) a tray for spills (d) an empty bottle
34. 34.🍋 Secret message: who does this step — ironing the paper? (a) a child can do it (b) an adult does it
35. 35.True or false: a seed is needed for the fizzy balloon. (a) True (b) False
36. 36.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we keep it the same (b) we change it (c) we measure it
37. 37.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a clear plastic bag (b) a few hours (c) a mirror (d) a potted plant
38. 38.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) vinegar (d) detergent water
39. 39.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
40. 40.True or false: a mirror is needed for making butter. (a) True (b) False

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