Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 317 · 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.🫧 Is sugar water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
2. 2.🧺 Which of these is not needed for the turmeric test? (a) lemon juice (b) turmeric powder (c) water (d) a mirror
3. 3.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
4. 4.True or false: give out water vapour is a job of the leaves. (a) False (b) True
5. 5.⚖️ 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) False (b) True
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) the amount poured (c) the same muddy water (d) how clear the water is
7. 7.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
8. 8.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) freezing water (c) melting ice (d) dissolving salt
9. 9.🌱 Is warmth needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
10. 10.🧂 Why do crystals appear as the dish dries? (a) salt grows roots (b) the dish melts (c) salt eats water (d) water evaporates
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) turmeric powder (b) cotton or cloth (c) muddy water (d) a funnel
13. 13.🧺 Which of these is not needed for the muddy water filter? (a) a funnel (b) sand and pebbles (c) muddy water (d) a magnet
14. 14.🍞 Which of these is something yeast needs? (a) salt (b) a magnet (c) sunlight (d) warm water
15. 15.True or false: small stones from dal is done by handpicking. (a) True (b) False
16. 16.🔍 Which is the odd one out? (a) vinegar (b) a magnet (c) sunlight (d) time
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) True (b) False
18. 18.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) True (b) False
19. 19.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
20. 20.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
21. 21.📘 The browning of lemon juice with heat is a ___ change. (a) physical (b) magnetic (c) chemical (d) musical
22. 22.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is the one thing we change. (a) True (b) False
23. 23.🧺 Do we need a battery cell for the yeast balloon? (a) not needed (b) needed
24. 24.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) bright blue (b) green (c) it stays white (d) reddish-brown
25. 25.True or false: an empty bottle is needed for the fizzy balloon. (a) True (b) False
26. 26.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
27. 27.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we measure it (b) we keep it the same (c) we change it
28. 28.🫧 Is detergent water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
29. 29.True or false: air is needed for a seed to sprout. (a) False (b) True
30. 30.🫗 Which of these is done by filtering? (a) bad grains from rice (b) tea leaves from tea (c) gravel from fine sand (d) sugar from sugar water
31. 31.🧺 Which of these is not needed for making butter? (a) a bowl (b) a timer (c) cold water to rinse (d) a mirror
32. 32.True or false: gravel from fine sand is done by winnowing. (a) True (b) False
33. 33.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) lick your fingers (d) wash hands afterwards
34. 34.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the liquid we test (c) the turmeric paper
35. 35.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
36. 36.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the water temperature (b) the same bottles (c) size of the balloon
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the amount of cream”? (a) we change it (b) we keep it the same (c) we measure it
38. 38.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) yeast (b) a jar with a tight lid (c) cold water to rinse (d) fresh cream
39. 39.🧺 Which of these is not needed for sprouting seeds? (a) yeast (b) a small bowl (c) a few days (d) moong seeds
40. 40.🧂 Which of these does not dissolve in water? (a) sugar (b) table salt (c) baking soda (d) sand

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