Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 589 · 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.True or false: make seeds is a job of the roots. (a) True (b) False
2. 2.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) hot (b) salty (c) clearer (d) muddier
3. 3.🌱 Seeds need water, air and ___ to sprout. (a) soil (b) warmth (c) sugar (d) salt
4. 4.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it is magnetic (c) it is heavier (d) it will not break
5. 5.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
6. 6.🧺 Do we need a battery cell for the fizzy balloon? (a) not needed (b) needed
7. 7.🧈 Why does shaking cream make butter? (a) the lid is warm (b) shaking adds salt (c) the jar adds butter (d) fat bits stick together
8. 8.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) milk turning to curd (d) dissolving salt
9. 9.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a battery cell (c) a small bowl (d) lemon juice
10. 10.🧺 Which of these is needed for the yeast balloon? (a) a comb (b) a battery cell (c) a magnet (d) a small bottle
11. 11.🔍 Which is the odd one out? (a) baking a cake (b) cooking an egg (c) browning lemon ink (d) melting ice
12. 12.🌱 Which of these is not needed for a seed to sprout? (a) air (b) warmth (c) water (d) salt
13. 13.True or false: a battery cell is needed for making butter. (a) False (b) True
14. 14.🧺 Which of these is not needed for the yeast balloon? (a) a balloon (b) turmeric powder (c) a small bottle (d) warm water
15. 15.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) browning lemon ink (c) dissolving salt (d) melting butter
16. 16.🧺 Do we need a few hours for the leafy bag test? (a) needed (b) not needed
17. 17.🍞 Which of these is something yeast does not need? (a) time (b) sugar (c) sunlight (d) warm water
18. 18.True or false: a magnet is needed for the yeast balloon. (a) True (b) False
19. 19.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) flower (c) stem (d) leaves
20. 20.🍋 Secret message: who does this step — reading the message? (a) a child can do it (b) an adult does it
21. 21.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) dry yeast (c) a comb (d) sugar
22. 22.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) a small bowl (c) an adult with an iron (d) turmeric powder
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the amount poured (b) the filter material (c) how clear the water is
24. 24.🧺 Do we need soap solution for the turmeric test? (a) needed (b) not needed
25. 25.🧺 Which of these is needed for the secret lemon message? (a) yeast (b) lemon juice (c) a magnet (d) a balloon
26. 26.🔍 Which is the odd one out? (a) vinegar (b) time (c) sugar (d) warm water
27. 27.🔍 Which is the odd one out? (a) sunlight (b) sugar (c) warmth (d) soil
28. 28.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) a small bottle (d) a paper clip
29. 29.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a comb (b) lemon juice (c) water (d) a dropper or spoon
30. 30.True or false: vinegar is needed for the fizzy balloon. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) sugar (b) time (c) salt (d) warm water
32. 32.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a jar with a tight lid (c) a battery cell (d) a timer
33. 33.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) add baking soda (c) rinse with clean water (d) rub it hard
34. 34.🔍 Which is the odd one out? (a) salt (b) sunlight (c) a magnet (d) sugar
35. 35.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) the time we wait (b) the size of the plant (c) amount of water drops (d) sun or shade
36. 36.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) a magnet (c) muddy water (d) sand and pebbles
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the liquid we test (d) the colour we see
38. 38.⚖️ 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 keep it the same (b) we change it (c) we measure it
39. 39.True or false: orange juice is an acid. (a) False (b) True
40. 40.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) throw them at friends (c) never put seeds in mouth (d) eat a few to check

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