Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 934 · 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 potted plant (b) a clear plastic bag (c) a magnet (d) a rubber band
2. 2.True or false: a mirror is not needed for the muddy water filter. (a) True (b) False
3. 3.🧺 Do we need a magnet for the leafy bag test? (a) needed (b) not needed
4. 4.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) a balloon (d) cotton or cloth
5. 5.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a dropper or spoon (c) a balloon (d) white paper strips
6. 6.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
7. 7.🍋 Which of these steps is a job for an adult? (a) reading the message (b) writing the message (c) letting the paper dry (d) cutting the lemon
8. 8.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the colour we see”? (a) we change it (b) we keep it the same (c) we measure it
9. 9.🔍 Which is the odd one out? (a) writing the message (b) cutting the lemon (c) putting the iron away (d) plugging in the iron
10. 10.🍋 Secret message: who does this step — putting the iron away? (a) an adult does it (b) a child can do it
11. 11.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the kind of plant”? (a) we keep it the same (b) we measure it (c) we change it
12. 12.True or false: baking a cake is a change that can be undone. (a) True (b) False
13. 13.🛟 Why should you never drink water just because it looks clear? (a) clear water is hot (b) clear water is salty (c) clear water is sweet (d) germs are invisible
14. 14.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) much less water (c) it fills with soil (d) exactly the same
15. 15.🧺 Which of these is not needed for the secret lemon message? (a) a cotton bud (b) white paper (c) an adult with an iron (d) turmeric powder
16. 16.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) vinegar (c) a rubber band (d) turmeric powder
17. 17.🪴 Which of these is a job of the roots? (a) make food in sunlight (b) hold the plant in soil (c) carry water upward (d) give out water vapour
18. 18.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) sugar (b) vinegar (c) a tray for spills (d) baking soda
19. 19.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: size of the balloon is the one thing we change. (a) False (b) True
20. 20.🍋 Which of these steps is a job a child can do? (a) plugging in the iron (b) putting the iron away (c) cutting the lemon (d) dipping the cotton bud
21. 21.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a funnel (c) sand and pebbles (d) a mirror
22. 22.📘 What do we call something that changes colour to show an acid or a base? (a) a magnet (b) a prism (c) a pulley (d) an indicator
23. 23.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) fresh cream (c) cold water to rinse (d) a battery cell
24. 24.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) an adult with an iron (b) a small bowl (c) lemon juice (d) turmeric powder
25. 25.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “days to see crystals”? (a) we change it (b) we measure it (c) we keep it the same
26. 26.🫧 Which of these is an acid? (a) orange juice (b) detergent water (c) plain water (d) baking soda water
27. 27.🧺 Which of these is needed for the muddy water filter? (a) turmeric powder (b) a mirror (c) sand and pebbles (d) yeast
28. 28.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
29. 29.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the kind of salt (b) sunny or shady place (c) the amount of salt (d) days to see crystals
31. 31.🪴 Which of these is a job of the stem? (a) give out water vapour (b) carry water upward (c) hold the plant in soil (d) make seeds
32. 32.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? What do we do with “the same kind of bag”? (a) we measure it (b) we keep it the same (c) we change it
33. 33.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) white paper (b) a cotton bud (c) an adult with an iron (d) a magnet
34. 34.🔍 Which is the odd one out? (a) sand (b) cooking oil (c) food colour (d) sawdust
35. 35.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
36. 36.🌱 Which of these does not sprout? (a) seeds in the freezer (b) seeds on wet cotton (c) wet seeds in the dark (d) wet seeds by a window
37. 37.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) boiled seeds (c) seeds on wet cotton (d) seeds in the freezer
38. 38.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? True or false: the amount of salt is kept the same. (a) False (b) True
39. 39.🧺 Three of these are needed for the secret lemon message. Which one is NOT needed? (a) lemon juice (b) a cotton bud (c) a mirror (d) an adult with an iron
40. 40.True or false: give out water vapour is a job of the leaves. (a) True (b) False

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