Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 494 · 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: a piece of string is not needed for growing salt crystals. (a) True (b) False
2. 2.🧈 Can this change be undone: rusting iron? (a) cannot be undone (b) can be undone
3. 3.🧺 Which of these is needed for making butter? (a) turmeric powder (b) a magnet (c) a balloon (d) a bowl
4. 4.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.🧺 Which of these is needed for sprouting seeds? (a) yeast (b) a magnet (c) a balloon (d) cotton wool
6. 6.⚖️ 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 measure it (c) we keep it the same
7. 7.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) the ink is magnetic (c) the paper ate it (d) dry juice is see-through
8. 8.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a magnet (d) white paper strips
9. 9.🧺 Which of these is not needed for the secret lemon message? (a) lemon juice (b) a cotton bud (c) a magnet (d) a small bowl
10. 10.True or false: warm water is something yeast does not need. (a) True (b) False
11. 11.True or false: tamarind water is an acid. (a) True (b) False
12. 12.🌱 Where does a sprouting seed get its first food from? (a) food stored in the seed (b) the sunlight only (c) the cotton wool (d) the air
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same glass (b) how clear the water is (c) the same muddy water (d) the same funnel
14. 14.True or false: water is not needed for the turmeric test. (a) True (b) False
15. 15.🧺 Do we need a mirror for the fizzy balloon? (a) needed (b) not needed
16. 16.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) warm water (c) a mirror (d) a spoon
17. 17.🧂 Does glucose powder dissolve in water? (a) does not dissolve (b) dissolves in water
18. 18.🧺 Do we need a battery cell for making butter? (a) not needed (b) needed
19. 19.True or false: a jar with a tight lid is not needed for making butter. (a) True (b) False
20. 20.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a mirror (b) a jar with a tight lid (c) a timer (d) a bowl
21. 21.🍞 Which of these is something yeast needs? (a) vinegar (b) salt (c) a magnet (d) warm water
22. 22.🧺 Do we need yeast for growing salt crystals? (a) not needed (b) needed
23. 23.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we measure it (b) we change it (c) we keep it the same
24. 24.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is kept the same? (a) the same bottles (b) the water temperature (c) size of the balloon
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is what we measure. (a) False (b) True
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we keep it the same (c) we measure it
28. 28.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a mirror (c) a magnet (d) a balloon
29. 29.🪴 Which part of a plant does this job: carry water upward? (a) leaves (b) roots (c) flower (d) stem
30. 30.🧺 Do we need yeast for making butter? (a) needed (b) not needed
31. 31.🧺 Do we need vinegar for the fizzy balloon? (a) not needed (b) needed
32. 32.🍞 Which of these is something yeast needs? (a) salt (b) sunlight (c) vinegar (d) sugar
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 kind of plant”? (a) we change it (b) we keep it the same (c) we measure it
34. 34.True or false: plugging in the iron is a job a child can do. (a) True (b) False
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we measure it (b) we keep it the same (c) we change it
36. 36.🫧 Which of these is an acid? (a) baking soda water (b) vinegar (c) sugar water (d) detergent water
37. 37.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) still runny cream (c) butter lumps (d) cheese
38. 38.🧺 Do we need a magnet for sprouting seeds? (a) not needed (b) needed
39. 39.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) folding paper (c) baking a cake (d) browning lemon ink
40. 40.True or false: orange juice is a base. (a) False (b) True

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