Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 847 · 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.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) add baking soda (d) rub it hard
2. 2.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is sweet (d) clear water is salty
3. 3.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of water is what we measure. (a) False (b) True
4. 4.🧂 Why do crystals appear as the dish dries? (a) water evaporates (b) salt eats water (c) the dish melts (d) salt grows roots
5. 5.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
6. 6.🧺 Do we need a mirror for the fizzy balloon? (a) not needed (b) needed
7. 7.🧺 Do we need a clean glass for the muddy water filter? (a) needed (b) not needed
8. 8.True or false: carry water upward is a job of the leaves. (a) True (b) False
9. 9.🪴 Where did the water inside the bag come from? (a) the leaves (b) the rubber band (c) the plastic (d) the rain
10. 10.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we keep it the same (c) we measure it
11. 11.🔮 Predict: you stop shaking after only one minute. What do you have? (a) ghee (b) butter lumps (c) cheese (d) still runny cream
12. 12.🫗 How do we separate gravel from fine sand? (a) sieving (b) winnowing (c) filtering (d) handpicking
13. 13.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) white paper strips (c) a magnet (d) soap solution
14. 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is kept the same. (a) True (b) False
15. 15.🫧 Is salt water an acid, a base or neutral? (a) a base (b) neutral (c) an acid
16. 16.🧺 Which of these is not needed for the fizzy balloon? (a) baking soda (b) a funnel or spoon (c) vinegar (d) a mirror
17. 17.🌱 Seeds need water, air and ___ to sprout. (a) sugar (b) salt (c) soil (d) warmth
18. 18.True or false: milk turning to curd is a change that can be undone. (a) True (b) False
19. 19.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) True (b) False
20. 20.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) few or no crystals (c) crystals grow faster (d) it turns sweet
21. 21.🫧 Which of these is an acid? (a) detergent water (b) sugar water (c) vinegar (d) salt water
22. 22.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they do not sprout (b) they glow (c) they grow fruit (d) they sprout faster
23. 23.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) an acid (c) a base
24. 24.True or false: yeast is not needed for the secret lemon message. (a) False (b) True
25. 25.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) sugar (c) a tray for spills (d) an empty bottle
26. 26.True or false: cold water to rinse is not needed for making butter. (a) False (b) True
27. 27.🍋 Secret message: who does this step — writing the message? (a) an adult does it (b) a child can do it
28. 28.True or false: make seeds is a job of the stem. (a) True (b) False
29. 29.True or false: cotton wool is needed for sprouting seeds. (a) True (b) False
30. 30.🍞 Does yeast need sunlight to make gas? (a) yeast does not need it (b) yeast needs it
31. 31.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it turns yellow (b) it grows very little (c) it bursts at once (d) it grows much faster
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) sunny or shady place (c) the kind of salt (d) the amount of salt
33. 33.🔮 Predict: you use plain water instead of vinegar. What happens? (a) the balloon bursts (b) it turns to honey (c) a huge eruption (d) very little fizzing
34. 34.⚖️ Fair test — do seeds need water to sprout? What do we do with “wet or dry cotton”? (a) we keep it the same (b) we measure it (c) we change it
35. 35.True or false: sugar water keeps turmeric yellow. (a) True (b) False
36. 36.🔍 Which is the odd one out? (a) writing the message (b) ironing the paper (c) reading the message (d) letting the paper dry
37. 37.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
38. 38.🛟 What should you do after touching soil or seeds? (a) rub your eyes (b) skip washing (c) lick your fingers (d) wash your hands
39. 39.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) orange juice

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