Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 65 · 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.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
2. 2.True or false: moong seeds is needed for sprouting seeds. (a) True (b) False
3. 3.🟡 Turmeric paper meets baking soda water. What happens? (a) turns reddish-brown (b) stays yellow
4. 4.True or false: a clean glass is needed for the muddy water filter. (a) True (b) False
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we keep it the same (c) we measure it
6. 6.🧈 Why does shaking cream make butter? (a) fat bits stick together (b) the lid is warm (c) shaking adds salt (d) the jar adds butter
7. 7.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we change it (b) we measure it (c) we keep it the same
8. 8.🧺 Do we need warm water for growing salt crystals? (a) not needed (b) needed
9. 9.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) baking soda water (c) soap solution (d) vinegar
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we measure it (b) we change it (c) we keep it the same
11. 11.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) the paper floats (c) writing stays faint (d) it gets darker
12. 12.True or false: time is something yeast does not need. (a) False (b) True
13. 13.True or false: tamarind water keeps turmeric yellow. (a) True (b) False
14. 14.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
15. 15.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) a magnet (c) a tray for spills (d) baking soda
16. 16.True or false: a potted plant is not needed for the leafy bag test. (a) True (b) False
17. 17.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
18. 18.True or false: seeds in the freezer does not sprout. (a) False (b) True
19. 19.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
20. 20.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
21. 21.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows very little (c) it turns yellow (d) it grows much faster
22. 22.🧺 Which of these is needed for the leafy bag test? (a) yeast (b) a battery cell (c) a rubber band (d) a magnet
23. 23.⚖️ 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 size of the plant (b) the kind of plant (c) sun or shade (d) the same kind of bag
24. 24.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) a base (c) an acid
25. 25.🧺 Which of these is needed for making butter? (a) fresh cream (b) a magnet (c) a battery cell (d) yeast
26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) True (b) False
27. 27.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it wilts and droops (c) it flowers more (d) it turns blue
28. 28.🌊 How is salt made in salt pans by the sea? (a) salt rains down (b) sand is ground up (c) sea water evaporates (d) fish make it
29. 29.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) they melt (b) they turn to stones (c) yes, they sprout (d) no, never
30. 30.⚖️ 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
31. 31.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a seed (b) a funnel or spoon (c) baking soda (d) a tray for spills
32. 32.True or false: a piece of string is not needed for growing salt crystals. (a) False (b) True
33. 33.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) size of the balloon (b) the kind of balloon (c) spoons of baking soda
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the amount of vinegar (c) spoons of baking soda (d) the same bottle
35. 35.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) sand and pebbles (c) muddy water (d) a battery cell
36. 36.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they become magnets (b) they react (c) they float apart (d) they freeze
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is the one thing we change. (a) False (b) True
38. 38.🫧 Which of these is a base? (a) tamarind water (b) soap solution (c) lemon juice (d) curd
39. 39.🔍 Which is the odd one out? (a) a magnet (b) sugar (c) time (d) warm water
40. 40.🎈 What blows up the balloon in the yeast experiment? (a) steam (b) carbon dioxide gas (c) smoke (d) air from outside

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