Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 893 · 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? What do we do with “the same jar”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.True or false: ironing the paper is a job for an adult. (a) True (b) False
3. 3.True or false: a clean glass is needed for the muddy water filter. (a) False (b) True
4. 4.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rinse with clean water (c) ignore it (d) rub it hard
5. 5.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a shallow dish (d) salt
6. 6.True or false: orange juice is an acid. (a) False (b) True
7. 7.True or false: tamarind water is an acid. (a) False (b) True
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) turmeric powder (c) a magnet (d) water
9. 9.🧺 Do we need a timer for making butter? (a) not needed (b) needed
10. 10.🧺 Do we need yeast for the muddy water filter? (a) not needed (b) needed
11. 11.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) muddy water (c) a balloon (d) turmeric powder
13. 13.🟡 Turmeric paper meets tamarind water. What happens? (a) stays yellow (b) turns reddish-brown
14. 14.🔍 Which is the odd one out? (a) salt (b) sugar (c) sunlight (d) a magnet
15. 15.🧺 Do we need a mirror for the muddy water filter? (a) needed (b) not needed
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a jar with a tight lid (c) fresh cream (d) a balloon
18. 18.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
19. 19.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it turns yellow (d) it grows very little
20. 20.🛟 What should you do after handling muddy water? (a) nothing is needed (b) lick your fingers (c) wash hands afterwards (d) wipe hands on face
21. 21.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
22. 22.🧈 Which of these is a change that can be undone? (a) milk turning to curd (b) cooking an egg (c) baking a cake (d) melting ice
23. 23.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) bigger crystals (b) smaller crystals (c) no crystals (d) liquid crystals
24. 24.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) a clean glass (c) cotton or cloth (d) a magnet
25. 25.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
26. 26.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it disappears (b) it turns yellow again (c) it turns blue (d) it turns darker red
27. 27.🔍 Which is the odd one out? (a) melting butter (b) milk turning to curd (c) rusting iron (d) cooking an egg
28. 28.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a comb (c) a balloon (d) an empty bottle
29. 29.🔍 Which is the odd one out? (a) cooking an egg (b) freezing water (c) melting butter (d) dissolving salt
30. 30.🫧 Is curd an acid, a base or neutral? (a) a base (b) an acid (c) neutral
31. 31.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is the one thing we change. (a) False (b) True
32. 32.🪴 Which of these is a job of the roots? (a) hold the plant in soil (b) make seeds (c) carry water upward (d) hold up the leaves
33. 33.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) yes, if it is cold (d) no, germs may stay
34. 34.🔍 Which is the odd one out? (a) rusting iron (b) folding paper (c) browning lemon ink (d) cooking an egg
35. 35.🧂 Does sugar dissolve in water? (a) dissolves in water (b) does not dissolve
36. 36.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a few hours (c) a potted plant (d) yeast
37. 37.True or false: a magnet is not needed for the secret lemon message. (a) True (b) False
38. 38.True or false: sand and pebbles is not needed for the muddy water filter. (a) False (b) True
39. 39.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it grows bigger (c) it turns blue (d) it shrinks
40. 40.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) very little fizzing (d) a huge eruption

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