Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 290 · 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 — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the light we look in (c) the turmeric paper (d) the number of drops
2. 2.🪴 Which of these is a job of the leaves? (a) carry water upward (b) take in water from soil (c) hold up the leaves (d) give out water vapour
3. 3.🧺 Do we need turmeric powder for the turmeric test? (a) not needed (b) needed
4. 4.🧈 Can this change be undone: browning lemon ink? (a) can be undone (b) cannot be undone
5. 5.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
6. 6.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) gently, not too tight (c) as tight as possible (d) with a hot glue gun
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the same bottles”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
9. 9.True or false: plain water is an acid. (a) True (b) False
10. 10.🧺 Do we need a small bowl for sprouting seeds? (a) needed (b) not needed
11. 11.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) sunlight (c) a potted plant (d) a magnet
12. 12.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we keep it the same (b) we change it (c) we measure it
13. 13.🧺 Do we need yeast for the secret lemon message? (a) needed (b) not needed
14. 14.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
15. 15.True or false: chaff from wheat grain is done by winnowing. (a) False (b) True
16. 16.True or false: warm water is something yeast does not need. (a) True (b) False
17. 17.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is the one thing we change. (a) False (b) True
18. 18.🫧 Which of these is an acid? (a) sugar water (b) vinegar (c) plain water (d) detergent water
19. 19.🔍 Which is the odd one out? (a) folding paper (b) freezing water (c) milk turning to curd (d) dissolving salt
20. 20.🫧 What do you see when baking soda meets vinegar? (a) nothing at all (b) it glows in the dark (c) it turns to ice (d) lots of fizzy bubbles
21. 21.🪴 Which part of a plant does this job: make seeds? (a) leaves (b) roots (c) stem (d) flower
22. 22.🧈 Which of these is a change that can be undone? (a) baking a cake (b) cooking an egg (c) melting butter (d) milk turning to curd
23. 23.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “sun or shade”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.True or false: letting the paper dry is a job for an adult. (a) False (b) True
25. 25.🫗 How do we separate bad grains from rice? (a) winnowing (b) sieving (c) handpicking (d) filtering
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) how hard we shake (b) the cream temperature (c) time to make butter (d) the amount of cream
27. 27.True or false: orange juice is neutral. (a) False (b) True
28. 28.True or false: turmeric powder is not needed for the muddy water filter. (a) False (b) True
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) False (b) True
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
32. 32.True or false: a balloon is not needed for the fizzy balloon. (a) True (b) False
33. 33.True or false: warm water is not needed for the yeast balloon. (a) True (b) False
34. 34.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) make seeds (c) carry water upward (d) take in water from soil
35. 35.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a battery cell (c) a clean glass (d) muddy water
36. 36.True or false: plain water keeps turmeric yellow. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) cutting the lemon (b) putting the iron away (c) ironing the paper (d) writing the message
38. 38.True or false: sawdust does not dissolve in water. (a) True (b) False
39. 39.True or false: sand does not dissolve in water. (a) False (b) True
40. 40.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is kept the same. (a) True (b) False

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