Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 873 · 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 needed for the turmeric test? (a) water (b) a balloon (c) a mirror (d) yeast
2. 2.🧺 Which of these is needed for the yeast balloon? (a) a battery cell (b) a magnet (c) a balloon (d) a mirror
3. 3.True or false: baking soda is not needed for the fizzy balloon. (a) True (b) False
4. 4.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) nobody needs to (c) a friend who is running (d) a grown-up
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) True (b) False
6. 6.True or false: tamarind water is an acid. (a) False (b) True
7. 7.🌱 Which of these is needed for a seed to sprout? (a) warmth (b) soil (c) sunlight (d) sugar
8. 8.🌱 Which of these does not sprout? (a) wet seeds in the dark (b) wet seeds by a window (c) seeds on dry cotton (d) seeds on wet cotton
9. 9.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we measure it (b) we keep it the same (c) we change it
10. 10.🧂 Why do we stir in salt until no more will dissolve? (a) to change its colour (b) to cool the water (c) to make it very salty (d) to make it fizz
11. 11.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a few days (b) a small bowl (c) cotton wool (d) a balloon
12. 12.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it will not break (c) it is magnetic (d) it is hotter
13. 13.🧺 Which of these is needed for the muddy water filter? (a) a balloon (b) a battery cell (c) a mirror (d) sand and pebbles
14. 14.True or false: warm water is needed for growing salt crystals. (a) True (b) False
15. 15.🍋 Which of these steps is a job for an adult? (a) dipping the cotton bud (b) ironing the paper (c) reading the message (d) letting the paper dry
16. 16.True or false: table salt does not dissolve in water. (a) True (b) False
17. 17.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows much faster (c) it turns yellow (d) it grows very little
18. 18.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
19. 19.🛟 The water for the yeast should be ___. (a) very salty (b) boiling hot (c) ice cold (d) warm, not hot
20. 20.🪴 Through which part does a plant take in water from the soil? (a) the fruits (b) the leaves (c) the roots (d) the flowers
21. 21.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it dissolves (b) it turns to sand (c) it floats on top (d) it sinks to the bottom
22. 22.🌱 Is air needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
23. 23.🫧 Which of these is an acid? (a) curd (b) soap solution (c) salt water (d) sugar water
24. 24.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we change it (b) we measure it (c) we keep it the same
25. 25.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) a bowl (c) a battery cell (d) a timer
26. 26.🧺 Which of these is not needed for the muddy water filter? (a) cotton or cloth (b) a balloon (c) a funnel (d) muddy water
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) amount of water drops (b) the same kind of bag (c) sun or shade
28. 28.True or false: take in water from soil is a job of the stem. (a) True (b) False
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) your school uniform (b) your best clothes (c) a white party dress (d) an old shirt or apron
30. 30.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) green (c) reddish (d) bright blue
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) spoons of baking soda (b) size of the balloon (c) the amount of vinegar
32. 32.True or false: a magnet is not needed for growing salt crystals. (a) True (b) False
33. 33.⚖️ 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 keep it the same (c) we change it
34. 34.True or false: ironing the paper is a job for an adult. (a) True (b) False
35. 35.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a balloon (c) a piece of string (d) a spoon
36. 36.🔮 Predict: you cover the dish so no water can escape. What happens? (a) crystals grow faster (b) it turns sweet (c) few or no crystals (d) it fizzes
37. 37.🫧 Is soap solution an acid, a base or neutral? (a) an acid (b) a base (c) neutral
38. 38.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) True (b) False
39. 39.🫗 Why does filtered muddy water look clearer? (a) the mud dissolves (b) the water evaporates (c) the filter traps mud (d) the filter adds soap
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we measure it (b) we change it (c) we keep it the same

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