Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 132 · 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 not needed for the leafy bag test? (a) a few hours (b) a potted plant (c) a magnet (d) a clear plastic bag
2. 2.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) fresh cream (c) a magnet (d) a bowl
3. 3.🔍 Which is the odd one out? (a) salt (b) vinegar (c) sunlight (d) sugar
4. 4.🛟 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
5. 5.🔍 Which is the odd one out? (a) folding paper (b) freezing water (c) dissolving salt (d) cooking an egg
6. 6.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
7. 7.🧺 Do we need a battery cell for the muddy water filter? (a) needed (b) not needed
8. 8.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) ignore it (c) add baking soda (d) rinse with clean water
9. 9.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
10. 10.🧺 Do we need a battery cell for the leafy bag test? (a) not needed (b) needed
11. 11.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a mirror (b) vinegar (c) a tray for spills (d) a funnel or spoon
12. 12.🔍 Which is the odd one out? (a) letting the paper dry (b) ironing the paper (c) writing the message (d) reading the message
13. 13.True or false: lemon juice keeps turmeric yellow. (a) False (b) True
14. 14.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a magnet (c) a piece of string (d) a spoon
15. 15.🔮 Predict: the adult irons for only one second. What happens? (a) the paper floats (b) it gets darker (c) writing turns green (d) writing stays faint
16. 16.🧺 Do we need a few days for sprouting seeds? (a) not needed (b) needed
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the water temperature”? (a) we measure it (b) we change it (c) we keep it the same
18. 18.🔍 Which is the odd one out? (a) salt water (b) lemon juice (c) tamarind water (d) vinegar
19. 19.True or false: a balloon is needed for the fizzy balloon. (a) False (b) True
20. 20.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
21. 21.🔮 Predict: turmeric paper is dipped in salt water. What happens? (a) it turns red (b) it turns blue (c) it turns black (d) it stays yellow
22. 22.True or false: a clear plastic bag is needed for the leafy bag test. (a) True (b) False
23. 23.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the same bottle is what we measure. (a) True (b) False
24. 24.True or false: hold the plant in soil is a job of the leaves. (a) False (b) True
25. 25.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
26. 26.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) False (b) True
27. 27.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) sand and pebbles (c) muddy water (d) a mirror
29. 29.🔮 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
30. 30.True or false: mud from water is done by filtering. (a) True (b) False
31. 31.True or false: turmeric powder is not needed for the leafy bag test. (a) True (b) False
32. 32.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) an adult with an iron (c) a small bowl (d) turmeric powder
34. 34.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a small bowl (c) a cotton bud (d) a mirror
35. 35.🍋 Which of these steps is a job a child can do? (a) ironing the paper (b) reading the message (c) plugging in the iron (d) cutting the lemon
36. 36.True or false: a tray for spills is needed for the fizzy balloon. (a) False (b) True
37. 37.🧺 Do we need turmeric powder for the yeast balloon? (a) not needed (b) needed
38. 38.🛟 Why is a plastic jar a good choice for shaking? (a) it is hotter (b) it will not break (c) it is heavier (d) it is magnetic
39. 39.🧺 Which of these is not needed for the muddy water filter? (a) yeast (b) a clean glass (c) a funnel (d) muddy water
40. 40.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts

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