Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 568 · 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.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a balloon (c) a magnet (d) a mirror
3. 3.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) muddy water (c) a clean glass (d) a magnet
4. 4.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they sprout faster (c) they do not sprout (d) they glow
5. 5.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) the amount of cream (b) time to make butter (c) the cream temperature (d) the same jar
6. 6.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) feed them to pets (c) eat a few to check (d) never put seeds in mouth
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) size of the balloon (b) the amount of yeast (c) the water temperature
8. 8.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
9. 9.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) fresh cream (b) a jar with a tight lid (c) cold water to rinse (d) a magnet
10. 10.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the liquid we test (b) the turmeric paper (c) the number of drops (d) the colour we see
11. 11.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) turmeric powder (d) a funnel
12. 12.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) a base (c) neutral
13. 13.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) letting the paper dry (c) dipping the cotton bud (d) writing the message
14. 14.🧈 Which of these is a change that can be undone? (a) folding paper (b) baking a cake (c) milk turning to curd (d) cooking an egg
15. 15.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is kept the same. (a) False (b) True
16. 16.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
17. 17.🧺 Which of these is needed for the leafy bag test? (a) a few hours (b) a mirror (c) turmeric powder (d) a magnet
18. 18.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is what we measure. (a) True (b) False
19. 19.🧂 Which of these does not dissolve in water? (a) small pebbles (b) table salt (c) sugar (d) food colour
20. 20.🌱 Is soil needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
21. 21.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a mirror (b) fresh cream (c) a bowl (d) a timer
22. 22.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
23. 23.True or false: lemon juice is an acid. (a) False (b) True
24. 24.True or false: a jar with a tight lid is needed for making butter. (a) False (b) True
25. 25.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
26. 26.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) a battery cell (c) a balloon (d) warm water
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is the one thing we change. (a) True (b) False
28. 28.⚖️ 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 change it (b) we keep it the same (c) we measure it
29. 29.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
30. 30.⚖️ 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
31. 31.🧺 Do we need a battery cell for the fizzy balloon? (a) not needed (b) needed
32. 32.True or false: a paper clip is needed for the yeast balloon. (a) True (b) False
33. 33.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) sunlight (c) a clear plastic bag (d) a magnet
34. 34.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we change it (b) we keep it the same (c) we measure it
35. 35.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) neither of them (b) the cool cloudy day (c) both the same (d) the hot sunny day
36. 36.⚖️ 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
37. 37.True or false: water is needed for sprouting seeds. (a) False (b) True
38. 38.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) a tray for spills (c) sugar (d) a funnel or spoon
39. 39.⚖️ 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
40. 40.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is the one thing we change. (a) False (b) True

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