Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 563 · 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 cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) the amount of cream (c) time to make butter
2. 2.🔍 Which is the odd one out? (a) soap solution (b) tamarind water (c) baking soda water (d) detergent water
3. 3.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a mirror (c) baking soda (d) vinegar
4. 4.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
5. 5.⚖️ 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 sugar (b) the same bottles (c) size of the balloon (d) the water temperature
6. 6.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
7. 7.🍋 Why does the lemon writing turn brown with heat? (a) heat adds colour (b) paper turns lemony (c) the juice scorches first (d) the iron is brown
8. 8.True or false: a battery cell is needed for the muddy water filter. (a) True (b) False
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is what we measure. (a) False (b) True
10. 10.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) never put seeds in mouth (c) eat a few to check (d) throw them at friends
11. 11.True or false: baking soda water keeps turmeric yellow. (a) True (b) False
12. 12.True or false: make seeds is a job of the flower. (a) False (b) True
13. 13.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) sugar (c) warm water (d) a mirror
14. 14.🧺 Which of these is needed for making butter? (a) a magnet (b) a battery cell (c) fresh cream (d) a mirror
15. 15.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) safe from small children (c) next to the baby (d) in a busy doorway
16. 16.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) browning lemon ink (c) cooking an egg (d) freezing water
17. 17.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
18. 18.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) sugar (b) turmeric powder (c) warm water (d) dry yeast
19. 19.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) True (b) False
20. 20.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) the youngest child (c) any child (d) only an adult
21. 21.True or false: muddy water is not needed for the muddy water filter. (a) True (b) False
22. 22.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) folding paper (c) browning lemon ink (d) milk turning to curd
23. 23.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) boiled seeds (c) seeds in the freezer (d) wet seeds in the dark
24. 24.🧂 Which of these dissolves in water? (a) small pebbles (b) sawdust (c) food colour (d) sand
25. 25.🧺 Do we need a small bowl for the secret lemon message? (a) not needed (b) needed
26. 26.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) lots of fizzy bubbles (c) nothing at all (d) it turns to ice
27. 27.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) a magnet (c) water (d) a dropper or spoon
28. 28.🛟 Why must children keep their fingers away from the iron? (a) it is magnetic (b) it can burn skin (c) it is cold (d) it is sticky
29. 29.True or false: lemon juice is an acid. (a) False (b) True
30. 30.🔮 Predict: the adult irons for only one second. What happens? (a) writing stays faint (b) writing turns green (c) it gets darker (d) the paper floats
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) True (b) False
32. 32.⚖️ 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 change it (b) we keep it the same (c) we measure it
33. 33.🫧 Which of these is neutral? (a) sugar water (b) lemon juice (c) tamarind water (d) vinegar
34. 34.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the iron setting (b) the kind of juice (c) the same paper (d) how dark the writing is
35. 35.True or false: a mirror is not needed for the turmeric test. (a) True (b) False
36. 36.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it wilts and droops (c) it grows faster (d) it flowers more
37. 37.🔍 Which is the odd one out? (a) baking soda water (b) detergent water (c) soap solution (d) plain water
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) False (b) True
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) the cream temperature (c) the same jar (d) how hard we shake
40. 40.🍞 Which of these is something yeast does not need? (a) salt (b) sugar (c) time (d) warm water

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