Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 759 · 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? True or false: the same jar is kept the same. (a) True (b) False
2. 2.True or false: detergent water is a base. (a) False (b) True
3. 3.True or false: rusting iron is a change that can be undone. (a) True (b) False
4. 4.🧺 Which of these is needed for the turmeric test? (a) water (b) yeast (c) a magnet (d) a battery cell
5. 5.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
6. 6.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) sugar from sugar water (c) small stones from dal (d) tea leaves from tea
7. 7.True or false: yeast is needed for sprouting seeds. (a) False (b) True
8. 8.True or false: sugar water turns turmeric reddish-brown. (a) True (b) False
9. 9.🌱 Is sunlight needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
10. 10.True or false: hold the plant in soil is a job of the roots. (a) True (b) False
11. 11.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny triangles (c) tiny spheres (d) tiny stars
12. 12.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
13. 13.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the liquid we test
14. 14.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we measure it (b) we change it (c) we keep it the same
15. 15.🧺 Which of these is needed for growing salt crystals? (a) salt (b) turmeric powder (c) a magnet (d) yeast
16. 16.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed
17. 17.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) a mirror (c) warm water (d) dry yeast
18. 18.🧺 Which of these is not needed for the turmeric test? (a) a balloon (b) lemon juice (c) soap solution (d) white paper strips
19. 19.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a battery cell (c) a clean glass (d) sand and pebbles
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the same bottles (b) the water temperature (c) size of the balloon
21. 21.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the filter material (b) how clear the water is (c) the amount poured (d) the same funnel
22. 22.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we keep it the same (b) we measure it (c) we change it
24. 24.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) True (b) False
25. 25.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.📘 Is the fizzing a sign that a new substance is made? (a) no, nothing changes (b) yes, a new gas forms (c) it is only dissolving (d) it is only melting
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is kept the same? (a) the kind of juice (b) how dark the writing is (c) the same cotton bud
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
29. 29.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
30. 30.True or false: salt water keeps turmeric yellow. (a) False (b) True
31. 31.⚖️ 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 water temperature (c) the amount of yeast (d) the same bottles
32. 32.True or false: a funnel or spoon is not needed for the fizzy balloon. (a) True (b) False
33. 33.🧈 Can this change be undone: browning lemon ink? (a) cannot be undone (b) can be undone
34. 34.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) False (b) True
35. 35.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) hold up the leaves (c) hold the plant in soil (d) give out water vapour
36. 36.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) nothing at all (c) it turns to ice (d) it glows in the dark
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the same bottles (b) size of the balloon (c) the amount of yeast (d) the amount of water
38. 38.🫗 How do we separate mud from water? (a) handpicking (b) filtering (c) winnowing (d) sieving
39. 39.True or false: tamarind water is a base. (a) False (b) True
40. 40.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a comb (c) a funnel or spoon (d) a balloon

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