Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 911 · 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.True or false: give out water vapour is a job of the leaves. (a) False (b) True
2. 2.🧺 Do we need yeast for making butter? (a) needed (b) not needed
3. 3.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the kind of juice”? (a) we keep it the same (b) we change it (c) we measure it
4. 4.🔍 Which is the odd one out? (a) warm water (b) salt (c) sugar (d) time
5. 5.🧈 Which tool is used in many Indian homes to churn curd into butter? (a) a pressure cooker (b) a rolling pin (c) a mathani (churner) (d) a sieve
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the water temperature (b) the amount of sugar (c) the amount of water (d) the amount of yeast
7. 7.🔮 Predict: the adult irons for only one second. What happens? (a) it gets darker (b) the paper floats (c) writing turns green (d) writing stays faint
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is kept the same. (a) False (b) True
9. 9.🌱 Is soil needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
10. 10.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) add baking soda (c) rinse with clean water (d) ignore it
11. 11.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we measure it (b) we change it (c) we keep it the same
12. 12.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a battery cell (b) a jar with a tight lid (c) cold water to rinse (d) a bowl
13. 13.🧺 Do we need a small bottle for the yeast balloon? (a) needed (b) not needed
14. 14.🧺 Do we need a mirror for growing salt crystals? (a) needed (b) not needed
15. 15.True or false: vinegar is an acid. (a) True (b) False
16. 16.🧂 Does table salt dissolve in water? (a) does not dissolve (b) dissolves in water
17. 17.⚖️ 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
18. 18.🧺 Which of these is needed for the fizzy balloon? (a) a funnel or spoon (b) a seed (c) a mirror (d) a magnet
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the kind of balloon (c) the same bottle (d) the amount of vinegar
20. 20.🔍 Which is the odd one out? (a) putting the iron away (b) ironing the paper (c) letting the paper dry (d) cutting the lemon
21. 21.🧺 Do we need a magnet for the turmeric test? (a) not needed (b) needed
22. 22.⚖️ Fair test — do seeds need water to sprout? Which of these is kept the same? (a) the same bowls (b) wet or dry cotton (c) how many seeds sprout
23. 23.True or false: putting the iron away is a job for an adult. (a) False (b) True
24. 24.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) False (b) True
25. 25.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) vinegar (b) a few hours (c) a potted plant (d) sunlight
26. 26.🧺 Which of these is needed for growing salt crystals? (a) turmeric powder (b) a piece of string (c) yeast (d) a magnet
27. 27.🧺 Do we need a battery cell for the muddy water filter? (a) not needed (b) needed
28. 28.True or false: sugar from sugar water is done by handpicking. (a) True (b) False
29. 29.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) an old shirt or apron (d) your school uniform
30. 30.🪴 Which part of a plant does this job: hold up the leaves? (a) roots (b) stem (c) leaves (d) flower
31. 31.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the mud (b) the salt (c) the water (d) nothing
32. 32.True or false: a mirror is needed for the leafy bag test. (a) True (b) False
33. 33.True or false: a balloon is needed for the turmeric test. (a) False (b) True
34. 34.📘 The browning of lemon juice with heat is a ___ change. (a) magnetic (b) physical (c) musical (d) chemical
35. 35.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny triangles (b) tiny spheres (c) tiny stars (d) tiny cubes
36. 36.🌱 Where does a sprouting seed get its first food from? (a) the air (b) the cotton wool (c) the sunlight only (d) food stored in the seed
37. 37.⚖️ 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
38. 38.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) wet or dry cotton (b) how many seeds sprout (c) the kind of seeds (d) the same bowls
39. 39.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) germs are invisible (c) clear water is salty (d) clear water is sweet
40. 40.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it can block breathing (c) it changes colour (d) it is too big

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