Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 922 · 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) sunlight (b) time (c) warm water (d) sugar
2. 2.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
3. 3.True or false: melting butter is a change that can be undone. (a) False (b) True
4. 4.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they turn to stones (b) they melt (c) yes, they sprout (d) no, never
5. 5.🔍 Which is the odd one out? (a) sugar water (b) soap solution (c) detergent water (d) baking soda water
6. 6.True or false: cotton or cloth is needed for the muddy water filter. (a) False (b) True
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🔍 Which is the odd one out? (a) tamarind water (b) vinegar (c) orange juice (d) baking soda water
9. 9.🔍 Which is the odd one out? (a) cooking an egg (b) dissolving salt (c) melting ice (d) melting butter
10. 10.📘 What do we call a seed starting to grow? (a) germination (b) condensation (c) pollination (d) evaporation
11. 11.True or false: sawdust does not dissolve in water. (a) False (b) True
12. 12.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the filter adds soap (c) the mud dissolves (d) the water evaporates
13. 13.🫧 Is orange juice an acid, a base or neutral? (a) an acid (b) neutral (c) a base
14. 14.🧺 Do we need cotton or cloth for the muddy water filter? (a) needed (b) not needed
15. 15.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
16. 16.True or false: plugging in the iron is a job a child can do. (a) False (b) True
17. 17.🪴 Which of these is a job of the flower? (a) hold up the leaves (b) carry water upward (c) give out water vapour (d) make seeds
18. 18.True or false: a balloon is not needed for the secret lemon message. (a) True (b) False
19. 19.🫧 Is plain water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
20. 20.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
21. 21.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a magnet (c) a clean glass (d) a mirror
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the kind of balloon (b) the amount of vinegar (c) size of the balloon (d) spoons of baking soda
23. 23.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a timer (c) a battery cell (d) fresh cream
24. 24.⚖️ 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 same jar (c) how hard we shake (d) the amount of cream
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
26. 26.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
27. 27.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
28. 28.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
29. 29.True or false: baking soda water turns turmeric reddish-brown. (a) False (b) True
30. 30.🧺 Do we need a mirror for the secret lemon message? (a) needed (b) not needed
31. 31.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) ironing the paper (c) letting the paper dry (d) cutting the lemon
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🔍 Which is the odd one out? (a) milk turning to curd (b) melting ice (c) rusting iron (d) browning lemon ink
34. 34.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
35. 35.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) eat a few to check (b) feed them to pets (c) throw them at friends (d) never put seeds in mouth
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) spoons of baking soda (c) the same bottle (d) the kind of balloon
37. 37.🧈 Which of these is a change that can be undone? (a) rusting iron (b) baking a cake (c) cooking an egg (d) melting ice
38. 38.⚖️ 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
39. 39.🫧 What do you see when baking soda meets vinegar? (a) it glows in the dark (b) nothing at all (c) it turns to ice (d) lots of fizzy bubbles
40. 40.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed

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