Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 115 · 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.🍞 Which of these is something yeast does not need? (a) warm water (b) sugar (c) salt (d) time
2. 2.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) gently, not too tight (c) with sharp wire (d) with a hot glue gun
3. 3.True or false: freezing water is a change that cannot be undone. (a) False (b) True
4. 4.🫧 Which of these is an acid? (a) detergent water (b) curd (c) sugar water (d) baking soda water
5. 5.📘 The browning of lemon juice with heat is a ___ change. (a) chemical (b) physical (c) musical (d) magnetic
6. 6.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
7. 7.🔍 Which is the odd one out? (a) warm water (b) sugar (c) a magnet (d) time
8. 8.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) False (b) True
9. 9.🫗 Which of these is done by winnowing? (a) small stones from dal (b) husk from rice grain (c) mud from water (d) gravel from fine sand
10. 10.🧺 Do we need a mirror for making butter? (a) needed (b) not needed
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a battery cell (c) sand and pebbles (d) muddy water
12. 12.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is what we measure. (a) True (b) False
13. 13.🔍 Which is the odd one out? (a) cooking an egg (b) melting butter (c) dissolving salt (d) folding paper
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the kind of plant (b) amount of water drops (c) sun or shade (d) the size of the plant
15. 15.True or false: writing the message is a job a child can do. (a) True (b) False
16. 16.True or false: small stones from dal is done by handpicking. (a) False (b) True
17. 17.🧺 Which of these is not needed for the yeast balloon? (a) dry yeast (b) a balloon (c) sugar (d) turmeric powder
18. 18.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a comb (c) water (d) white paper strips
20. 20.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a magnet (b) cold water to rinse (c) a timer (d) a jar with a tight lid
21. 21.🧺 Which of these is needed for the fizzy balloon? (a) a comb (b) sugar (c) a magnet (d) an empty bottle
22. 22.🔮 The fizzing stops after a while. Why? (a) the bottle got tired (b) the gas froze (c) an ingredient ran out (d) the balloon got cold
23. 23.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is the one thing we change. (a) False (b) True
24. 24.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) a funnel (d) muddy water
25. 25.🟡 Turmeric paper meets vinegar. What happens? (a) turns reddish-brown (b) stays yellow
26. 26.🧺 Do we need a timer for making butter? (a) not needed (b) needed
27. 27.🧂 Why do we stir in salt until no more will dissolve? (a) to make it fizz (b) to change its colour (c) to make it very salty (d) to cool the water
28. 28.🔮 Predict: the adult irons for only one second. What happens? (a) writing stays faint (b) it gets darker (c) writing turns green (d) the paper floats
29. 29.True or false: a balloon is not needed for making butter. (a) True (b) False
30. 30.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is the one thing we change. (a) False (b) True
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
32. 32.⚖️ 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
33. 33.True or false: turmeric powder is needed for the leafy bag test. (a) True (b) False
34. 34.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) it turns blue (c) there is no change (d) it grows bigger
35. 35.🧺 Do we need a battery cell for sprouting seeds? (a) needed (b) not needed
36. 36.🧺 Do we need a mirror for sprouting seeds? (a) not needed (b) needed
37. 37.🧂 Does chalk powder dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
39. 39.🧺 Do we need a clear plastic bag for the leafy bag test? (a) needed (b) not needed
40. 40.🌱 Will these sprout: boiled seeds? (a) sprouts (b) does not sprout

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