Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 654 · 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.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) an empty bottle (c) a mirror (d) a tray for spills
2. 2.🟡 Turmeric paper is dipped in soap solution. What colour does it turn? (a) green (b) reddish-brown (c) bright blue (d) it stays white
3. 3.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they turn to stones (c) they melt (d) no, never
4. 4.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) salt (c) soil (d) warmth
5. 5.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sip each liquid (c) mix bathroom cleaners (d) sniff each bottle hard
6. 6.🔍 Which is the odd one out? (a) chalk powder (b) sugar (c) cooking oil (d) sawdust
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we change it (b) we keep it the same (c) we measure it
8. 8.🌱 Will these sprout: seeds in the freezer? (a) sprouts (b) does not sprout
9. 9.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we keep it the same (b) we measure it (c) we change it
10. 10.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
11. 11.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) a magnet (c) dry yeast (d) a paper clip
12. 12.🟡 Turmeric paper meets detergent water. What happens? (a) turns reddish-brown (b) stays yellow
13. 13.🧺 Which of these is not needed for the yeast balloon? (a) turmeric powder (b) warm water (c) dry yeast (d) sugar
14. 14.🍋 What colour does the lemon writing turn when an adult warms it? (a) brown (b) blue (c) white (d) green
15. 15.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) it shrinks to nothing (c) the balloon is smaller (d) the balloon is bigger
16. 16.🧺 Do we need a paper clip for the yeast balloon? (a) needed (b) not needed
17. 17.🧈 Which of these is a change that cannot be undone? (a) browning lemon ink (b) dissolving salt (c) melting butter (d) melting ice
18. 18.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is what we measure. (a) False (b) True
19. 19.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) the paper ate it (c) it turned into air (d) dry juice is see-through
20. 20.🌊 How is salt made in salt pans by the sea? (a) fish make it (b) sand is ground up (c) sea water evaporates (d) salt rains down
21. 21.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
22. 22.True or false: yeast is needed for sprouting seeds. (a) False (b) True
23. 23.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) wet or dry cotton (b) how many seeds sprout (c) the kind of seeds
24. 24.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we measure it (b) we keep it the same (c) we change it
25. 25.🧺 Do we need dry yeast for the yeast balloon? (a) not needed (b) needed
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) on the edge of a table (b) next to the baby (c) safe from small children (d) in a busy doorway
27. 27.True or false: water is not needed for the turmeric test. (a) False (b) True
28. 28.True or false: yeast is needed for the muddy water filter. (a) True (b) False
29. 29.🫧 Is orange juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
30. 30.🍋 Secret message: who does this step — cutting the lemon? (a) an adult does it (b) a child can do it
31. 31.True or false: cold water to rinse is not needed for making butter. (a) True (b) False
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
33. 33.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
34. 34.True or false: a magnet is needed for the turmeric test. (a) True (b) False
35. 35.🪴 Which of these is a job of the stem? (a) make seeds (b) hold the plant in soil (c) make food in sunlight (d) hold up the leaves
36. 36.🫗 Why does filtered muddy water look clearer? (a) the filter traps mud (b) the mud dissolves (c) the water evaporates (d) the filter adds soap
37. 37.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a small bowl (c) a balloon (d) water
38. 38.🫗 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
39. 39.⚖️ 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
40. 40.🧺 Which of these is needed for the leafy bag test? (a) a potted plant (b) a battery cell (c) vinegar (d) a mirror

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