Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 788 · 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.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we keep it the same (c) we measure it
2. 2.🧺 Which of these is needed for growing salt crystals? (a) a mirror (b) a magnet (c) warm water (d) a battery cell
3. 3.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is kept the same. (a) True (b) False
4. 4.True or false: fresh cream is not needed for making butter. (a) True (b) False
5. 5.🫧 What do you see when baking soda meets vinegar? (a) lots of fizzy bubbles (b) it glows in the dark (c) it turns to ice (d) nothing at all
6. 6.🍋 Which of these steps is a job a child can do? (a) cutting the lemon (b) plugging in the iron (c) writing the message (d) ironing the paper
7. 7.True or false: make seeds is a job of the flower. (a) True (b) False
8. 8.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) fresh cream (c) turmeric powder (d) a jar with a tight lid
9. 9.True or false: orange juice is a base. (a) True (b) False
10. 10.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is what we measure? (a) the same cotton bud (b) the kind of juice (c) how dark the writing is (d) the iron setting
11. 11.🧺 Which of these is not needed for the muddy water filter? (a) muddy water (b) yeast (c) sand and pebbles (d) a clean glass
12. 12.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the kind of balloon is kept the same. (a) False (b) True
13. 13.🫗 Which of these is done by evaporating? (a) tea leaves from tea (b) sugar from sugar water (c) gravel from fine sand (d) mud from water
14. 14.🔍 Which is the odd one out? (a) salt (b) warm water (c) sunlight (d) a magnet
15. 15.True or false: a funnel or spoon is needed for the fizzy balloon. (a) False (b) True
16. 16.True or false: a balloon is not needed for the turmeric test. (a) False (b) True
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the amount of vinegar”? (a) we keep it the same (b) we change it (c) we measure it
18. 18.🧺 Which of these is needed for the fizzy balloon? (a) baking soda (b) a magnet (c) a comb (d) a battery cell
19. 19.True or false: tamarind water is an acid. (a) True (b) False
20. 20.🪴 Which of these is a job of the stem? (a) give out water vapour (b) hold up the leaves (c) take in water from soil (d) hold the plant in soil
21. 21.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
22. 22.🧈 Why does shaking cream make butter? (a) the jar adds butter (b) the lid is warm (c) fat bits stick together (d) shaking adds salt
23. 23.True or false: rusting iron is a change that can be undone. (a) True (b) False
24. 24.⚖️ 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 measure it (c) we keep it the same
25. 25.⚖️ Fair test — do seeds need water to sprout? What do we do with “the number of seeds”? (a) we measure it (b) we change it (c) we keep it the same
26. 26.🛟 What should you do if vinegar splashes in your eye? (a) rinse with clean water (b) rub it hard (c) ignore it (d) add baking soda
27. 27.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) transpiration (c) germination (d) reflection
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the number of drops (b) the light we look in (c) the turmeric paper (d) the liquid we test
29. 29.🪴 Which of these is a job of the roots? (a) take in water from soil (b) hold up the leaves (c) make food in sunlight (d) make seeds
30. 30.True or false: detergent water is an acid. (a) True (b) False
31. 31.🔍 Which is the odd one out? (a) lemon juice (b) soap solution (c) tamarind water (d) sugar water
32. 32.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the colour we see (b) the light we look in (c) the liquid we test
33. 33.True or false: carry water upward is a job of the leaves. (a) True (b) False
34. 34.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a rubber band (b) sunlight (c) a magnet (d) a few hours
35. 35.True or false: freezing water is a change that can be undone. (a) True (b) False
36. 36.True or false: a magnet is not needed for the turmeric test. (a) False (b) True
37. 37.🧂 Which of these dissolves in water? (a) food colour (b) chalk powder (c) sawdust (d) cooking oil
38. 38.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) vinegar (c) a battery cell (d) a balloon
39. 39.True or false: give out water vapour is a job of the roots. (a) False (b) True
40. 40.🫧 Which of these is neutral? (a) soap solution (b) detergent water (c) plain water (d) lemon juice

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