Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 948 · 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.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
2. 2.⚖️ 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 measure it (c) we keep it the same
3. 3.🫗 Which of these is done by filtering? (a) gravel from fine sand (b) bran from wheat flour (c) sugar from sugar water (d) tea leaves from tea
4. 4.True or false: baking a cake is a change that cannot be undone. (a) False (b) True
5. 5.🧺 Which of these is not needed for the yeast balloon? (a) turmeric powder (b) dry yeast (c) a balloon (d) sugar
6. 6.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a battery cell (b) moong seeds (c) a small bowl (d) water
7. 7.True or false: dry yeast is needed for the yeast balloon. (a) False (b) True
8. 8.🧺 Do we need cotton wool for sprouting seeds? (a) needed (b) not needed
9. 9.🍞 Which of these is something yeast needs? (a) a magnet (b) sunlight (c) vinegar (d) warm water
10. 10.🫧 Is baking soda water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
11. 11.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) salt crystals (b) tiny water drops (c) nothing at all (d) tiny insects
12. 12.🧺 Do we need a few days for sprouting seeds? (a) needed (b) not needed
13. 13.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) more butter forms (b) it turns blue (c) no butter forms (d) it turns to cheese
14. 14.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a mirror (b) white paper (c) a small bowl (d) an adult with an iron
15. 15.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) wet or dry cotton (b) the same bowls (c) the number of seeds (d) how many seeds sprout
16. 16.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it changes colour (c) it can block breathing (d) it gets wet
17. 17.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a balloon (b) dry yeast (c) a magnet (d) warm water
18. 18.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) lemon juice (b) soap solution (c) turmeric powder (d) yeast
19. 19.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) nothing is needed (c) wash hands afterwards (d) lick your fingers
20. 20.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is what we measure? (a) the colour we see (b) the liquid we test (c) the turmeric paper (d) the number of drops
21. 21.🔍 Which is the odd one out? (a) folding paper (b) melting ice (c) baking a cake (d) dissolving salt
22. 22.🧈 Can this change be undone: cooking an egg? (a) can be undone (b) cannot be undone
23. 23.🧺 Which of these is not needed for making butter? (a) a bowl (b) a timer (c) cold water to rinse (d) a balloon
24. 24.True or false: freezing water is a change that can be undone. (a) True (b) False
25. 25.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we measure it (b) we keep it the same (c) we change it
26. 26.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) water (c) a magnet (d) a few days
27. 27.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
28. 28.True or false: lemon juice is an acid. (a) True (b) False
29. 29.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
30. 30.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) a magnet (c) a small bowl (d) turmeric powder
31. 31.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) turmeric powder (b) warm water (c) sugar (d) a small bottle
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) cold water to rinse (b) a balloon (c) fresh cream (d) a bowl
34. 34.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the kind of balloon”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.True or false: an adult with an iron is not needed for the secret lemon message. (a) False (b) True
36. 36.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
37. 37.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) very little fizzing (c) it turns to honey (d) the balloon bursts
38. 38.🌱 Is water needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
39. 39.🔍 Which is the odd one out? (a) lemon juice (b) plain water (c) soap solution (d) salt water
40. 40.🔍 Which is the odd one out? (a) warmth (b) air (c) sunlight (d) water

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