Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 509 · 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.🫗 How do we separate tea leaves from tea? (a) winnowing (b) handpicking (c) sieving (d) filtering
2. 2.🔮 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
3. 3.🧺 Which of these is not needed for sprouting seeds? (a) water (b) cotton wool (c) moong seeds (d) a battery cell
4. 4.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we measure it (b) we change it (c) we keep it the same
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a balloon (c) sand and pebbles (d) muddy water
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the time we wait”? (a) we measure it (b) we change it (c) we keep it the same
7. 7.True or false: lemon juice is neutral. (a) False (b) True
8. 8.🔍 Which is the odd one out? (a) plain water (b) salt water (c) soap solution (d) tamarind water
9. 9.🫗 Which of these is done by winnowing? (a) husk from rice grain (b) sugar from sugar water (c) tea leaves from tea (d) bran from wheat flour
10. 10.🧂 Which of these dissolves in water? (a) sugar (b) small pebbles (c) sand (d) chalk powder
11. 11.True or false: turmeric powder is not needed for the turmeric test. (a) False (b) True
12. 12.🔍 Which is the odd one out? (a) putting the iron away (b) ironing the paper (c) cutting the lemon (d) dipping the cotton bud
13. 13.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) tiny water drops (d) nothing at all
14. 14.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) sugar (c) a balloon (d) an empty bottle
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the turmeric paper (c) the light we look in (d) the liquid we test
16. 16.🪴 Which of these is a job of the flower? (a) make food in sunlight (b) give out water vapour (c) take in water from soil (d) make seeds
17. 17.True or false: lemon juice keeps turmeric yellow. (a) True (b) False
18. 18.True or false: a battery cell is not needed for the turmeric test. (a) True (b) False
19. 19.🧺 Which of these is needed for sprouting seeds? (a) turmeric powder (b) moong seeds (c) a balloon (d) a battery cell
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) an empty bottle (c) vinegar (d) a comb
21. 21.🧺 Which of these is needed for sprouting seeds? (a) a mirror (b) turmeric powder (c) water (d) a battery cell
22. 22.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) salt (c) yeast (d) a spoon
23. 23.True or false: turmeric powder is not needed for the muddy water filter. (a) True (b) False
24. 24.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) a clear plastic bag (c) sunlight (d) a battery cell
26. 26.🔍 Which is the odd one out? (a) air (b) soil (c) sugar (d) salt
27. 27.⚖️ 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
28. 28.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
29. 29.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) warmth (c) salt (d) soil
30. 30.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) wet or dry cotton (b) the same bowls (c) how many seeds sprout (d) the same place
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) False (b) True
32. 32.📘 What do we call plants giving out water vapour from their leaves? (a) transpiration (b) germination (c) reflection (d) digestion
33. 33.🧺 Do we need a magnet for sprouting seeds? (a) not needed (b) needed
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) the same dish (c) days to see crystals (d) the amount of water
35. 35.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) yeast (b) a jar with a tight lid (c) a bowl (d) fresh cream
36. 36.🌱 Will these sprout: boiled seeds? (a) does not sprout (b) sprouts
37. 37.True or false: a magnet is something yeast needs. (a) True (b) False
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) the same funnel (c) how clear the water is
39. 39.🧺 Which of these is needed for the fizzy balloon? (a) sugar (b) a seed (c) vinegar (d) a comb
40. 40.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed

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