Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 594 · 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 a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
2. 2.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the amount of cream (c) the cream temperature (d) the same jar
3. 3.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) salt water (d) baking soda water
4. 4.True or false: sugar is something yeast does not need. (a) True (b) False
5. 5.🧺 Which of these is not needed for making butter? (a) a timer (b) a bowl (c) turmeric powder (d) a jar with a tight lid
6. 6.True or false: sand dissolves in water. (a) True (b) False
7. 7.🫗 How do we separate salt from sea water? (a) filtering (b) handpicking (c) evaporating (d) winnowing
8. 8.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) an empty bottle (c) baking soda (d) a mirror
9. 9.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
10. 10.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) baking a cake (c) dissolving salt (d) cooking an egg
11. 11.🫧 Which of these is neutral? (a) soap solution (b) salt water (c) lemon juice (d) baking soda water
12. 12.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) days to see crystals (b) the amount of water (c) sunny or shady place (d) the amount of salt
13. 13.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
14. 14.🔍 Which is the odd one out? (a) food colour (b) sawdust (c) chalk powder (d) sand
15. 15.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) time (d) a magnet
16. 16.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
17. 17.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) a rainbow (b) blue words (c) dark brown words (d) almost nothing
18. 18.🧺 Which of these is needed for the turmeric test? (a) a dropper or spoon (b) a mirror (c) a comb (d) a battery cell
19. 19.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same place (b) wet or dry cotton (c) the kind of seeds (d) the number of seeds
20. 20.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same muddy water (b) how clear the water is (c) the filter material
21. 21.True or false: salt is something yeast does not need. (a) True (b) False
22. 22.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
23. 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a potted plant (c) turmeric powder (d) a clear plastic bag
24. 24.True or false: seeds on wet cotton sprouts in a few days. (a) True (b) False
25. 25.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same funnel is the one thing we change. (a) True (b) False
27. 27.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) a funnel (d) muddy water
29. 29.🧺 Do we need yeast for the secret lemon message? (a) not needed (b) needed
30. 30.🧈 Can this change be undone: melting butter? (a) can be undone (b) cannot be undone
31. 31.🔍 Which is the odd one out? (a) salt water (b) sugar water (c) plain water (d) vinegar
32. 32.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.True or false: vinegar is an acid. (a) False (b) True
34. 34.🟡 Which of these turns turmeric reddish-brown? (a) plain water (b) soap solution (c) vinegar (d) tamarind water
35. 35.True or false: sugar water is a base. (a) True (b) False
36. 36.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a magnet (c) an indicator (d) a prism
37. 37.True or false: a small bottle is needed for the yeast balloon. (a) True (b) False
38. 38.🧺 Which of these is needed for the leafy bag test? (a) sunlight (b) a magnet (c) a battery cell (d) turmeric powder
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) True (b) False
40. 40.🧺 Do we need a bowl for making butter? (a) not needed (b) needed

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