Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 228 · 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 needed for sprouting seeds? (a) a magnet (b) a mirror (c) a battery cell (d) a few days
2. 2.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) white paper strips (b) water (c) turmeric powder (d) a balloon
3. 3.⚖️ Fair test — do seeds need water to sprout? True or false: the number of seeds is kept the same. (a) True (b) False
4. 4.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) vinegar (c) baking soda (d) a balloon
6. 6.🧺 Do we need turmeric powder for the turmeric test? (a) needed (b) not needed
7. 7.🪴 Which of these is a job of the flower? (a) make food in sunlight (b) hold the plant in soil (c) make seeds (d) give out water vapour
8. 8.🔍 Which is the odd one out? (a) detergent water (b) baking soda water (c) soap solution (d) lemon juice
9. 9.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) yeast (c) white paper (d) a cotton bud
10. 10.🍋 A drop of lemon juice falls on turmeric paper. What happens? (a) it stays yellow (b) it turns blue (c) it turns black (d) it turns red
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we measure it (c) we keep it the same
12. 12.True or false: sand dissolves in water. (a) True (b) False
13. 13.True or false: chaff from wheat grain is done by handpicking. (a) True (b) False
14. 14.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
15. 15.True or false: a funnel is not needed for the muddy water filter. (a) True (b) False
16. 16.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) turmeric powder (b) a clear plastic bag (c) a rubber band (d) a few hours
17. 17.🍞 Does yeast need vinegar to make gas? (a) yeast needs it (b) yeast does not need it
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a balloon (b) vinegar (c) an empty bottle (d) a seed
19. 19.True or false: a comb is needed for the fizzy balloon. (a) False (b) True
20. 20.🧺 Do we need a magnet for making butter? (a) needed (b) not needed
21. 21.True or false: cooking an egg is a change that cannot be undone. (a) False (b) True
22. 22.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) water (c) a magnet (d) moong seeds
23. 23.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a potted plant (b) a magnet (c) sunlight (d) a few hours
24. 24.True or false: air is not needed for a seed to sprout. (a) True (b) False
25. 25.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) size of the balloon (b) the amount of vinegar (c) spoons of baking soda (d) the kind of balloon
26. 26.🧺 Which of these is not needed for the turmeric test? (a) water (b) a dropper or spoon (c) white paper strips (d) a mirror
27. 27.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) a magnet (c) a funnel (d) a mirror
28. 28.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a shallow dish (b) salt (c) a spoon (d) a battery cell
29. 29.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) cooking an egg (d) dissolving salt
30. 30.🧺 Do we need a balloon for the turmeric test? (a) needed (b) not needed
31. 31.True or false: make food in sunlight is a job of the leaves. (a) True (b) False
32. 32.🔍 Which is the odd one out? (a) chalk powder (b) sawdust (c) food colour (d) small pebbles
33. 33.🧺 Do we need yeast for the leafy bag test? (a) not needed (b) needed
34. 34.🟡 Which of these keeps turmeric yellow? (a) detergent water (b) lemon juice (c) baking soda water (d) soap solution
35. 35.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) how many seeds sprout (b) wet or dry cotton (c) the same bowls (d) the kind of seeds
36. 36.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is kept the same. (a) True (b) False
37. 37.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) next to the baby (c) in a busy doorway (d) on the edge of a table
38. 38.🔍 What do you see after shaking cream in a jar for a long time? (a) clear water only (b) bubbles of gas (c) lumps of butter (d) sugar crystals
39. 39.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) feed them to pets (b) eat a few to check (c) never put seeds in mouth (d) throw them at friends
40. 40.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) sunlight (c) a potted plant (d) a magnet

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