Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 813 · 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.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is what we measure. (a) False (b) True
2. 2.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we change it (b) we measure it (c) we keep it the same
3. 3.⚖️ 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 keep it the same (b) we change it (c) we measure it
4. 4.True or false: sugar dissolves in water. (a) True (b) False
5. 5.🪴 Which part of a plant does this job: give out water vapour? (a) stem (b) leaves (c) flower (d) roots
6. 6.🧺 Which of these is needed for the leafy bag test? (a) turmeric powder (b) vinegar (c) a rubber band (d) a mirror
7. 7.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they become magnets (c) they react (d) they freeze
8. 8.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is what we measure. (a) True (b) False
9. 9.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the iron setting is the one thing we change. (a) True (b) False
10. 10.🧺 Do we need a comb for the fizzy balloon? (a) needed (b) not needed
11. 11.True or false: mud from water is done by handpicking. (a) True (b) False
12. 12.🫧 Is salt water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
13. 13.🌱 Will these sprout: seeds in the freezer? (a) sprouts (b) does not sprout
14. 14.🫧 Which of these is an acid? (a) soap solution (b) baking soda water (c) detergent water (d) vinegar
15. 15.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it grows bigger (b) it turns blue (c) there is no change (d) it shrinks
16. 16.🫧 Is lemon juice an acid, a base or neutral? (a) an acid (b) a base (c) neutral
17. 17.🟡 Which of these keeps turmeric yellow? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
18. 18.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) time to make butter (b) the amount of cream (c) the same jar (d) the cream temperature
19. 19.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) sunlight (c) a clear plastic bag (d) a mirror
20. 20.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
21. 21.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) clear water is hot (d) germs are invisible
22. 22.⚖️ 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 change it (b) we keep it the same (c) we measure it
23. 23.True or false: a battery cell is needed for the fizzy balloon. (a) False (b) True
24. 24.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
25. 25.🧺 Do we need baking soda for the fizzy balloon? (a) not needed (b) needed
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is the one thing we change. (a) False (b) True
27. 27.🫧 Is curd an acid, a base or neutral? (a) an acid (b) a base (c) neutral
28. 28.🎈 Why does the balloon blow up? (a) vinegar is hot (b) gas is made inside (c) outside air gets in (d) the bottle shrinks
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) a white party dress (d) an old shirt or apron
30. 30.🪴 Which part of a plant does this job: make food in sunlight? (a) roots (b) stem (c) leaves (d) flower
31. 31.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we measure it (b) we change it (c) we keep it the same
32. 32.🧺 Which of these is needed for sprouting seeds? (a) a few days (b) turmeric powder (c) a battery cell (d) a magnet
33. 33.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) time to make butter (b) the cream temperature (c) the amount of cream
34. 34.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the same dish”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) True (b) False
36. 36.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) baking a cake (c) freezing water (d) cooking an egg
37. 37.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) skip washing
38. 38.🧂 Does small pebbles dissolve in water? (a) does not dissolve (b) dissolves in water
39. 39.🔍 Muddy water is left still for an hour. What happens to the mud? (a) it turns to sand (b) it dissolves (c) it floats on top (d) it sinks to the bottom
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) turmeric powder (d) sugar

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