Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 9 · 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 muddy water filter? (a) muddy water (b) a funnel (c) a balloon (d) cotton or cloth
2. 2.⚖️ 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 the one thing we change. (a) True (b) False
3. 3.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to change its colour (d) to make it very salty
4. 4.🔍 Which is the odd one out? (a) soap solution (b) lemon juice (c) baking soda water (d) detergent water
5. 5.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the salt (b) the water (c) the mud (d) nothing
6. 6.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a small bowl (b) cotton wool (c) yeast (d) a few days
7. 7.🔍 What do you see after shaking cream in a jar for a long time? (a) lumps of butter (b) clear water only (c) bubbles of gas (d) sugar crystals
8. 8.🧺 Do we need a comb for the yeast balloon? (a) needed (b) not needed
9. 9.📘 What do we call something that changes colour to show an acid or a base? (a) an indicator (b) a magnet (c) a pulley (d) a prism
10. 10.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) the number of seeds (b) the same bowls (c) the same place (d) how many seeds sprout
11. 11.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we keep it the same (b) we change it (c) we measure it
12. 12.🧺 Do we need turmeric powder for the muddy water filter? (a) not needed (b) needed
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of water is what we measure. (a) False (b) True
14. 14.🛟 Why should you never drink water just because it looks clear? (a) clear water is sweet (b) clear water is salty (c) germs are invisible (d) clear water is hot
15. 15.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) sunlight (c) a battery cell (d) a rubber band
16. 16.🌱 Which of these sprouts in a few days? (a) wet seeds by a window (b) seeds in the freezer (c) boiled seeds (d) seeds on dry cotton
17. 17.🪴 Which part of a plant does this job: make seeds? (a) flower (b) roots (c) leaves (d) stem
18. 18.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
19. 19.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
20. 20.🪴 Which of these is a job of the leaves? (a) hold up the leaves (b) make seeds (c) hold the plant in soil (d) give out water vapour
21. 21.True or false: an adult with an iron is not needed for the secret lemon message. (a) True (b) False
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) True (b) False
23. 23.🧈 Before the butter appears, what does the cream turn into? (a) clear water (b) ice (c) powder (d) thick whipped cream
24. 24.🧈 Which of these is a change that can be undone? (a) baking a cake (b) rusting iron (c) browning lemon ink (d) freezing water
25. 25.🧺 Do we need a balloon for the muddy water filter? (a) needed (b) not needed
26. 26.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) size of the balloon (c) spoons of baking soda
27. 27.⚖️ 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 measure it (b) we change it (c) we keep it the same
28. 28.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sawdust (d) baking soda
29. 29.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) sand and pebbles (b) cotton or cloth (c) a funnel (d) a balloon
30. 30.🧺 Do we need a cotton bud for the secret lemon message? (a) not needed (b) needed
31. 31.🧺 Do we need a magnet for the turmeric test? (a) needed (b) not needed
32. 32.True or false: detergent water is neutral. (a) True (b) False
33. 33.🔍 Which is the odd one out? (a) dipping the cotton bud (b) letting the paper dry (c) reading the message (d) ironing the paper
34. 34.🔮 Predict: you use plain water instead of vinegar. What happens? (a) a huge eruption (b) very little fizzing (c) the balloon bursts (d) it turns to honey
35. 35.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is the one thing we change. (a) True (b) False
36. 36.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a rubber band (c) a potted plant (d) turmeric powder
37. 37.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) much more water (b) it fills with soil (c) much less water (d) exactly the same
38. 38.🫧 Is vinegar an acid, a base or neutral? (a) an acid (b) neutral (c) a base
39. 39.🔮 Predict: the adult irons for only one second. What happens? (a) writing turns green (b) it gets darker (c) writing stays faint (d) the paper floats
40. 40.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we keep it the same (b) we measure it (c) we change it

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