Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 364 · 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.🧈 Can this change be undone: melting ice? (a) cannot be undone (b) can be undone
2. 2.🛟 What should you do after handling muddy water? (a) nothing is needed (b) wipe hands on face (c) wash hands afterwards (d) lick your fingers
3. 3.True or false: a comb is needed for the yeast balloon. (a) True (b) False
4. 4.🧺 Which of these is needed for growing salt crystals? (a) a magnet (b) a battery cell (c) a balloon (d) a spoon
5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) a friend who is running (b) nobody needs to (c) the youngest child (d) a grown-up
6. 6.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a magnet (d) a spoon
7. 7.🫗 Why does filtered muddy water look clearer? (a) the filter adds soap (b) the mud dissolves (c) the water evaporates (d) the filter traps mud
8. 8.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) salt water (d) detergent water
9. 9.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) dissolving salt (c) baking a cake (d) melting butter
10. 10.True or false: warm water is not needed for the yeast balloon. (a) False (b) True
11. 11.🫗 How do we separate gravel from fine sand? (a) winnowing (b) filtering (c) sieving (d) handpicking
12. 12.True or false: hold the plant in soil is a job of the roots. (a) False (b) True
13. 13.🧺 Which of these is needed for the fizzy balloon? (a) a magnet (b) sugar (c) a seed (d) a funnel or spoon
14. 14.True or false: browning lemon ink is a change that can be undone. (a) True (b) False
15. 15.True or false: a mirror is needed for the fizzy balloon. (a) False (b) True
16. 16.True or false: table salt dissolves in water. (a) True (b) False
17. 17.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is kept the same. (a) False (b) True
18. 18.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the same cotton bud (c) the kind of juice (d) the same paper
19. 19.True or false: reading the message is a job a child can do. (a) False (b) True
20. 20.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
21. 21.True or false: glucose powder dissolves in water. (a) True (b) False
22. 22.🧈 Can this change be undone: baking a cake? (a) cannot be undone (b) can be undone
23. 23.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) ignore it (c) add baking soda (d) rub it hard
24. 24.🫧 Which of these is a base? (a) tamarind water (b) lemon juice (c) orange juice (d) baking soda water
25. 25.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
26. 26.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: days to see crystals is kept the same. (a) True (b) False
27. 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a mirror (b) a few hours (c) a clear plastic bag (d) a rubber band
28. 28.True or false: a balloon is needed for growing salt crystals. (a) True (b) False
29. 29.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) tiny insects (b) salt crystals (c) nothing at all (d) tiny water drops
30. 30.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is the one thing we change. (a) False (b) True
31. 31.🧺 Do we need a few days for sprouting seeds? (a) needed (b) not needed
32. 32.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same paper”? (a) we measure it (b) we change it (c) we keep it the same
33. 33.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) a battery cell (c) yeast (d) moong seeds
34. 34.🧺 Do we need a balloon for the turmeric test? (a) not needed (b) needed
35. 35.🌱 Will these sprout: wet seeds by a window? (a) sprouts (b) does not sprout
36. 36.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) bran from wheat flour (c) chaff from wheat grain (d) sugar from sugar water
37. 37.🧂 Does sawdust dissolve in water? (a) dissolves in water (b) does not dissolve
38. 38.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we change it (b) we measure it (c) we keep it the same
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the number of drops is kept the same. (a) True (b) False
40. 40.🔍 Which is the odd one out? (a) freezing water (b) melting ice (c) dissolving salt (d) cooking an egg

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