Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 624 · 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 a mirror for growing salt crystals? (a) needed (b) not needed
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we keep it the same (b) we change it (c) we measure it
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the size of the plant”? (a) we measure it (b) we change it (c) we keep it the same
4. 4.True or false: a small bowl is not needed for sprouting seeds. (a) True (b) False
5. 5.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the ironing time is kept the same. (a) False (b) True
6. 6.🧺 Do we need a magnet for the fizzy balloon? (a) needed (b) not needed
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the same jar (b) the amount of cream (c) time to make butter (d) the cream temperature
8. 8.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) True (b) False
10. 10.True or false: lemon juice is an acid. (a) False (b) True
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) how clear the water is (b) the amount poured (c) the same muddy water (d) the same glass
12. 12.🧺 Do we need turmeric powder for the muddy water filter? (a) needed (b) not needed
13. 13.True or false: sugar from sugar water is done by evaporating. (a) False (b) True
14. 14.🧺 Which of these is not needed for the turmeric test? (a) turmeric powder (b) a comb (c) white paper strips (d) lemon juice
15. 15.🛟 Who should use the hot iron in the secret message experiment? (a) the youngest child (b) any child (c) whoever is fastest (d) only an adult
16. 16.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we change it (b) we measure it (c) we keep it the same
17. 17.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) an old shirt or apron (c) your best clothes (d) your school uniform
19. 19.🪴 Where did the water inside the bag come from? (a) the rain (b) the rubber band (c) the leaves (d) the plastic
20. 20.🧂 Which of these dissolves in water? (a) sugar (b) sawdust (c) small pebbles (d) sand
21. 21.🔍 Which is the odd one out? (a) table salt (b) sugar (c) sand (d) food colour
22. 22.🧈 Which of these is a change that cannot be undone? (a) milk turning to curd (b) freezing water (c) melting butter (d) folding paper
23. 23.🧂 Which of these does not dissolve in water? (a) baking soda (b) cooking oil (c) glucose powder (d) table salt
24. 24.🔍 Which is the odd one out? (a) salt (b) vinegar (c) sugar (d) a magnet
25. 25.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) skip washing (c) wash your hands (d) lick your fingers
26. 26.🔍 What do you see after shaking cream in a jar for a long time? (a) sugar crystals (b) lumps of butter (c) bubbles of gas (d) clear water only
27. 27.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) much less water (d) exactly the same
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.True or false: chalk powder dissolves in water. (a) False (b) True
30. 30.True or false: turmeric powder is not needed for the leafy bag test. (a) True (b) False
31. 31.True or false: salt is not needed for a seed to sprout. (a) True (b) False
32. 32.⚖️ 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 amount of yeast (c) the water temperature
33. 33.⚖️ Fair test — do seeds need water to sprout? What do we do with “the same bowls”? (a) we change it (b) we measure it (c) we keep it the same
34. 34.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
35. 35.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
36. 36.🧺 Do we need water for the turmeric test? (a) needed (b) not needed
37. 37.🟡 Turmeric paper meets tamarind water. What happens? (a) turns reddish-brown (b) stays yellow
38. 38.🍞 Which of these is something yeast does not need? (a) warm water (b) time (c) sugar (d) salt
39. 39.🪴 Which of these is a job of the roots? (a) take in water from soil (b) carry water upward (c) make seeds (d) make food in sunlight
40. 40.🧺 Do we need yeast for the muddy water filter? (a) needed (b) not needed

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