Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 283 · 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: writing the message is a job a child can do. (a) False (b) True
2. 2.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) it shrinks (b) there is no change (c) it grows bigger (d) it turns blue
3. 3.🟡 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
4. 4.🧺 Which of these is needed for making butter? (a) a mirror (b) a balloon (c) turmeric powder (d) a jar with a tight lid
5. 5.🫧 Is detergent water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
6. 6.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) soap solution (d) detergent water
7. 7.🌱 Which of these is needed for a seed to sprout? (a) air (b) salt (c) sugar (d) soil
8. 8.🧺 Which of these is needed for the muddy water filter? (a) a mirror (b) sand and pebbles (c) a magnet (d) a balloon
9. 9.🧈 Why does shaking cream make butter? (a) the lid is warm (b) the jar adds butter (c) shaking adds salt (d) fat bits stick together
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the same dish is the one thing we change. (a) True (b) False
11. 11.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a rubber band (c) turmeric powder (d) a magnet
12. 12.🧺 Which of these is needed for growing salt crystals? (a) a balloon (b) a shallow dish (c) a battery cell (d) a mirror
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) a magnet (c) white paper strips (d) soap solution
14. 14.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a funnel (b) turmeric powder (c) sand and pebbles (d) a clean glass
15. 15.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is what we measure. (a) True (b) False
16. 16.🧺 Do we need warm water for the yeast balloon? (a) needed (b) not needed
17. 17.True or false: a timer is not needed for making butter. (a) True (b) False
18. 18.🪴 Which part of a plant does this job: make food in sunlight? (a) leaves (b) stem (c) roots (d) flower
19. 19.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the kind of salt”? (a) we keep it the same (b) we change it (c) we measure it
20. 20.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) an empty bottle (c) baking soda (d) a tray for spills
21. 21.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is hot (c) germs are invisible (d) clear water is salty
22. 22.🧺 Do we need a mirror for sprouting seeds? (a) needed (b) not needed
23. 23.🔮 Predict: sprouts grow in the dark for a week. What colour are their leaves? (a) blue (b) bright red (c) pale yellow (d) dark green
24. 24.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) hydrogen (b) helium (c) oxygen (d) carbon dioxide
25. 25.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: how dark the writing is is what we measure. (a) False (b) True
26. 26.⚖️ 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 same bottles (c) the water temperature
27. 27.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the same bottle (b) spoons of baking soda (c) the amount of vinegar (d) the kind of balloon
28. 28.True or false: lemon juice is an acid. (a) True (b) False
29. 29.True or false: soap solution keeps turmeric yellow. (a) False (b) True
30. 30.True or false: husk from rice grain is done by winnowing. (a) False (b) True
31. 31.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
32. 32.🛟 Who should use the hot iron in the secret message experiment? (a) whoever is fastest (b) any child (c) only an adult (d) the youngest child
33. 33.🧈 Which of these is a change that cannot be undone? (a) freezing water (b) dissolving salt (c) rusting iron (d) melting butter
34. 34.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
35. 35.🛟 Why must the jar lid be screwed on tightly? (a) so it turns yellow (b) so air gets out (c) so cream does not spill (d) so it gets hot
36. 36.🫗 How do we separate bad grains from rice? (a) evaporating (b) winnowing (c) handpicking (d) sieving
37. 37.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the same bottle (b) size of the balloon (c) spoons of baking soda
38. 38.🫧 Is soap solution an acid, a base or neutral? (a) neutral (b) an acid (c) a base
39. 39.True or false: a balloon is needed for the yeast balloon. (a) True (b) False
40. 40.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed

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