Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 808 · 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.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a balloon (c) a battery cell (d) a clean glass
2. 2.🔍 Which is the odd one out? (a) dissolving salt (b) folding paper (c) baking a cake (d) freezing water
3. 3.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
4. 4.True or false: yeast is needed for the secret lemon message. (a) True (b) False
5. 5.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wash hands afterwards (c) wipe hands on face (d) nothing is needed
6. 6.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) wet seeds in the dark (c) boiled seeds (d) seeds in the freezer
7. 7.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) the cream temperature (b) the amount of cream (c) time to make butter (d) the same jar
8. 8.🌱 Will these sprout: wet seeds in the dark? (a) sprouts (b) does not sprout
9. 9.🛟 After the yeast experiment, what should you do with the mixture? (a) keep it for a month (b) throw it at a wall (c) put it in your mouth (d) pour it down the sink
10. 10.True or false: a paper clip is not needed for the yeast balloon. (a) True (b) False
11. 11.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we measure it (b) we keep it the same (c) we change it
12. 12.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) no, salt passes through (c) yes, all of it (d) it turns to sand
13. 13.True or false: a battery cell is needed for making butter. (a) True (b) False
14. 14.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) fresh cream (c) a mirror (d) a bowl
15. 15.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) letting the paper dry (d) putting the iron away
16. 16.📘 Leaves have tiny holes that let out water vapour. What are they called? (a) veins (b) petals (c) stomata (d) roots
17. 17.🧈 Which of these is a change that can be undone? (a) dissolving salt (b) browning lemon ink (c) baking a cake (d) cooking an egg
18. 18.🧺 Do we need cold water to rinse for making butter? (a) needed (b) not needed
19. 19.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
20. 20.🧺 Do we need white paper strips for the turmeric test? (a) needed (b) not needed
21. 21.🌱 Will these sprout: seeds on wet cotton? (a) sprouts (b) does not sprout
22. 22.True or false: seeds on wet cotton does not sprout. (a) False (b) True
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the filter material”? (a) we change it (b) we keep it the same (c) we measure it
24. 24.🧺 Which of these is not needed for growing salt crystals? (a) salt (b) a spoon (c) warm water (d) turmeric powder
25. 25.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
26. 26.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.True or false: a battery cell is not needed for the muddy water filter. (a) True (b) False
28. 28.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is the one thing we change. (a) True (b) False
29. 29.🔍 Which is the odd one out? (a) dissolving salt (b) folding paper (c) melting ice (d) browning lemon ink
30. 30.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is what we measure. (a) True (b) False
31. 31.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) moong seeds (b) yeast (c) a small bowl (d) cotton wool
32. 32.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a paper clip (c) a battery cell (d) warm water
33. 33.🧺 Which of these is not needed for the yeast balloon? (a) a small bottle (b) dry yeast (c) warm water (d) a comb
34. 34.🫧 Which of these is a base? (a) lemon juice (b) plain water (c) orange juice (d) baking soda water
35. 35.🌱 Which of these is needed for a seed to sprout? (a) air (b) soil (c) salt (d) sugar
36. 36.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the number of drops (c) the liquid we test
37. 37.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) muddier (c) hot (d) clearer
38. 38.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) wash your hands (c) lick your fingers (d) skip washing
39. 39.🫧 Which of these is a base? (a) soap solution (b) sugar water (c) tamarind water (d) curd
40. 40.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it takes much longer (b) it makes salt (c) it turns pink (d) it is much faster

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