Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 248 · 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 not needed for making butter? (a) fresh cream (b) cold water to rinse (c) a bowl (d) turmeric powder
2. 2.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) size of the balloon (b) the amount of vinegar (c) the same bottle (d) spoons of baking soda
4. 4.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
5. 5.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a magnet (c) a cotton bud (d) lemon juice
6. 6.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a battery cell (c) a magnet (d) turmeric powder
7. 7.🌱 Which of these is not needed for a seed to sprout? (a) salt (b) air (c) warmth (d) water
8. 8.🧺 Which of these is needed for the secret lemon message? (a) a mirror (b) a magnet (c) white paper (d) yeast
9. 9.True or false: turmeric powder is not needed for the turmeric test. (a) True (b) False
10. 10.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a magnet (d) a funnel
11. 11.True or false: a magnet is not needed for the fizzy balloon. (a) True (b) False
12. 12.⚖️ 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) True (b) False
13. 13.⚖️ 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
14. 14.⚖️ 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
15. 15.🧺 Which of these is needed for the yeast balloon? (a) turmeric powder (b) sugar (c) a mirror (d) a battery cell
16. 16.True or false: turmeric powder is not needed for sprouting seeds. (a) True (b) False
17. 17.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) ignore it (c) rinse with clean water (d) rub it hard
18. 18.🟡 Which of these turns turmeric reddish-brown? (a) lemon juice (b) vinegar (c) soap solution (d) plain water
19. 19.🧺 Do we need a rubber band for the leafy bag test? (a) not needed (b) needed
20. 20.⚖️ 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 keep it the same (c) we measure it
21. 21.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) plugging in the iron (c) putting the iron away (d) letting the paper dry
22. 22.🧈 Can this change be undone: freezing water? (a) can be undone (b) cannot be undone
23. 23.🫧 Is lemon juice an acid, a base or neutral? (a) neutral (b) an acid (c) a base
24. 24.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) as tight as possible (c) gently, not too tight (d) with a hot glue gun
25. 25.🔍 Which is the odd one out? (a) food colour (b) sugar (c) chalk powder (d) table salt
26. 26.🧺 Which of these is not needed for the leafy bag test? (a) vinegar (b) a clear plastic bag (c) a rubber band (d) a potted plant
27. 27.🧺 Do we need a potted plant for the leafy bag test? (a) not needed (b) needed
28. 28.True or false: fresh cream is not needed for making butter. (a) False (b) True
29. 29.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a comb (d) soap solution
30. 30.True or false: rusting iron is a change that can be undone. (a) False (b) True
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the same funnel (b) the same glass (c) how clear the water is (d) the filter material
32. 32.🌱 Why do the seeds on dry cotton not sprout? (a) they have no water (b) they are too wet (c) they have no soil (d) they have no salt
33. 33.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) the amount of cream (c) time to make butter
34. 34.🟡 Why does soap solution change turmeric’s colour? (a) soap water is a base (b) soap is hot (c) soap is an acid (d) soap is magnetic
35. 35.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the same jar”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed
37. 37.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a battery cell (c) white paper strips (d) a comb
38. 38.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the turmeric paper (c) the light we look in (d) the liquid we test
39. 39.🛟 Why is a plastic jar a good choice for shaking? (a) it is heavier (b) it is hotter (c) it will not break (d) it is magnetic
40. 40.🧺 Do we need a few days for sprouting seeds? (a) needed (b) not needed

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