Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 923 · 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.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
2. 2.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they glow (b) they grow fruit (c) they do not sprout (d) they sprout faster
3. 3.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) needed (b) not needed
4. 4.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
5. 5.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) amount of water drops (c) the time we wait
6. 6.⚖️ 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) amount of water drops (b) sun or shade (c) the size of the plant (d) the kind of plant
7. 7.🛟 Who should use the hot iron in the secret message experiment? (a) only an adult (b) the youngest child (c) whoever is fastest (d) any child
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we measure it (b) we change it (c) we keep it the same
9. 9.⚖️ 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) size of the balloon (c) the kind of balloon (d) spoons of baking soda
10. 10.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) baking soda (b) a tray for spills (c) sugar (d) a balloon
11. 11.🍞 Why do we add sugar to the yeast? (a) to make it heavy (b) to make it sweet (c) to colour it (d) it is food for yeast
12. 12.🔍 Which is the odd one out? (a) small pebbles (b) sawdust (c) sugar (d) cooking oil
13. 13.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) melting butter (c) baking a cake (d) rusting iron
14. 14.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) green (b) reddish (c) white at once (d) bright blue
15. 15.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
16. 16.True or false: plugging in the iron is a job for an adult. (a) False (b) True
17. 17.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
18. 18.⚖️ 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 change it (b) we measure it (c) we keep it the same
19. 19.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) turmeric powder (c) soap solution (d) a mirror
20. 20.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a rubber band (c) a magnet (d) a clear plastic bag
21. 21.🛟 Which safety rule fits the fizzy balloon experiment? (a) put it in your mouth (b) seal it in a glass jar (c) keep it away from eyes (d) shake it near your face
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is the one thing we change? (a) the filter material (b) how clear the water is (c) the same muddy water (d) the same funnel
23. 23.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) a balloon (c) baking soda (d) a tray for spills
24. 24.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) nothing (d) the mud
25. 25.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a cotton bud (c) a battery cell (d) a small bowl
26. 26.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) a small bowl (b) a cotton bud (c) turmeric powder (d) lemon juice
27. 27.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much less water (b) it fills with soil (c) much more water (d) exactly the same
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) size of the balloon (b) the amount of sugar (c) the amount of water (d) the water temperature
29. 29.📘 What is yeast? (a) a kind of salt (b) a kind of stone (c) a kind of sugar (d) a tiny living fungus
30. 30.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we measure it (b) we keep it the same (c) we change it
31. 31.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
32. 32.🪴 Which part of a plant does this job: make seeds? (a) stem (b) roots (c) flower (d) leaves
33. 33.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) ignore it (d) rinse with clean water
34. 34.True or false: turmeric powder is not needed for the yeast balloon. (a) True (b) False
35. 35.True or false: cutting the lemon is a job a child can do. (a) True (b) False
36. 36.🫧 Is vinegar an acid, a base or neutral? (a) neutral (b) a base (c) an acid
37. 37.🎈 Why does the balloon blow up? (a) outside air gets in (b) gas is made inside (c) vinegar is hot (d) the bottle shrinks
38. 38.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) turmeric powder (b) a small bowl (c) moong seeds (d) cotton wool
39. 39.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) lemon juice (c) white paper strips (d) yeast
40. 40.🔍 Which is the odd one out? (a) salt water (b) soap solution (c) plain water (d) vinegar

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