Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 431 · 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.🍞 Does yeast need salt to make gas? (a) yeast needs it (b) yeast does not need it
2. 2.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it turns blue (b) it wilts and droops (c) it grows faster (d) it flowers more
3. 3.🫗 Which of these is done by filtering? (a) chaff from wheat grain (b) sugar from sugar water (c) tea leaves from tea (d) salt from sea water
4. 4.True or false: reading the message is a job a child can do. (a) True (b) False
5. 5.🛟 The water for the yeast should be ___. (a) very salty (b) warm, not hot (c) ice cold (d) boiling hot
6. 6.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) spoons of baking soda (c) size of the balloon
7. 7.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the kind of seeds (b) the same bowls (c) how many seeds sprout (d) wet or dry cotton
8. 8.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.True or false: a magnet is needed for making butter. (a) True (b) False
10. 10.True or false: sugar water turns turmeric reddish-brown. (a) False (b) True
11. 11.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) water (c) moong seeds (d) cotton wool
12. 12.🧺 Do we need a battery cell for the leafy bag test? (a) needed (b) not needed
13. 13.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) cotton or cloth (c) yeast (d) sand and pebbles
14. 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we keep it the same (c) we measure it
15. 15.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a piece of string (c) a spoon (d) a balloon
16. 16.🧺 Which of these is not needed for the leafy bag test? (a) a mirror (b) sunlight (c) a rubber band (d) a potted plant
17. 17.🛟 What should you do after handling muddy water? (a) wipe hands on face (b) lick your fingers (c) wash hands afterwards (d) nothing is needed
18. 18.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) sunlight (b) a clear plastic bag (c) turmeric powder (d) a potted plant
19. 19.🫧 Which of these is an acid? (a) orange juice (b) salt water (c) baking soda water (d) soap solution
20. 20.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a battery cell (c) an adult with an iron (d) a cotton bud
21. 21.⚖️ Fair test — do seeds need water to sprout? True or false: the same place is kept the same. (a) False (b) True
22. 22.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they float apart (b) they react (c) they become magnets (d) they freeze
23. 23.True or false: reading the message is a job for an adult. (a) False (b) True
24. 24.🧺 Do we need a battery cell for growing salt crystals? (a) not needed (b) needed
25. 25.🍞 Which of these is something yeast needs? (a) vinegar (b) a magnet (c) salt (d) time
26. 26.🧺 Which of these is needed for the turmeric test? (a) a magnet (b) lemon juice (c) a mirror (d) yeast
27. 27.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it turns yellow (c) it grows much faster (d) it grows very little
28. 28.📘 What do we call a solution that cannot dissolve any more salt? (a) frozen (b) magnetic (c) empty (d) saturated
29. 29.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) detergent water (c) soap solution (d) lemon juice
30. 30.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) rub it hard (c) add baking soda (d) ignore it
31. 31.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) it turns to sugar (c) no, salt passes through (d) it turns to sand
32. 32.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the amount of water (b) the same dish (c) the amount of salt (d) sunny or shady place
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) True (b) False
34. 34.True or false: a magnet is not needed for the muddy water filter. (a) False (b) True
35. 35.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🫗 Which of these is done by filtering? (a) bad grains from rice (b) chaff from wheat grain (c) bran from wheat flour (d) mud from water
37. 37.⚖️ 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) the size of the plant (c) sun or shade (d) the time we wait
38. 38.🧺 Do we need turmeric powder for the secret lemon message? (a) needed (b) not needed
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) True (b) False
40. 40.True or false: a battery cell is needed for making butter. (a) False (b) True

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