Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 660 · 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.True or false: sugar is needed for the fizzy balloon. (a) True (b) False
2. 2.🧺 Which of these is not needed for growing salt crystals? (a) warm water (b) a shallow dish (c) a balloon (d) salt
3. 3.🫧 Is salt water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
4. 4.🔍 Which is the odd one out? (a) sunlight (b) sugar (c) salt (d) a magnet
5. 5.🛟 Who should pour the warm water for the crystal experiment? (a) the youngest child (b) a grown-up (c) a friend who is running (d) nobody needs to
6. 6.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the kind of plant is what we measure. (a) False (b) True
7. 7.🧈 Which of these is a change that can be undone? (a) rusting iron (b) cooking an egg (c) browning lemon ink (d) melting ice
8. 8.True or false: take in water from soil is a job of the leaves. (a) True (b) False
9. 9.📘 What do we call a seed starting to grow? (a) germination (b) evaporation (c) pollination (d) condensation
10. 10.🧺 Which of these is not needed for the secret lemon message? (a) a magnet (b) lemon juice (c) a cotton bud (d) an adult with an iron
11. 11.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) how many seeds sprout (b) the same place (c) wet or dry cotton (d) the kind of seeds
12. 12.🔍 Which is the odd one out? (a) sunlight (b) air (c) soil (d) salt
13. 13.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same muddy water”? (a) we change it (b) we keep it the same (c) we measure it
14. 14.🌱 Which of these is not needed for a seed to sprout? (a) air (b) water (c) warmth (d) salt
15. 15.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
16. 16.🧺 Do we need a mirror for the muddy water filter? (a) not needed (b) needed
17. 17.🟡 Which of these keeps turmeric yellow? (a) baking soda water (b) soap solution (c) detergent water (d) lemon juice
18. 18.🧈 Which of these is a change that can be undone? (a) baking a cake (b) milk turning to curd (c) cooking an egg (d) melting butter
19. 19.🧺 Do we need an empty bottle for the fizzy balloon? (a) not needed (b) needed
20. 20.🫧 Is tamarind water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
21. 21.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is the one thing we change. (a) False (b) True
22. 22.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) hot (c) clearer (d) muddier
23. 23.🛟 How should the plastic bag be tied around the branch? (a) with sharp wire (b) with a hot glue gun (c) as tight as possible (d) gently, not too tight
24. 24.🧺 Which of these is not needed for making butter? (a) a jar with a tight lid (b) cold water to rinse (c) a timer (d) turmeric powder
25. 25.🧈 Can this change be undone: rusting iron? (a) can be undone (b) cannot be undone
26. 26.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the same paper (b) the iron setting (c) how dark the writing is (d) the kind of juice
27. 27.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the time we wait is what we measure. (a) True (b) False
28. 28.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a bowl (b) a timer (c) cold water to rinse (d) a mirror
29. 29.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we measure it (b) we change it (c) we keep it the same
30. 30.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the number of drops”? (a) we change it (b) we keep it the same (c) we measure it
31. 31.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is the one thing we change? (a) the amount of yeast (b) the water temperature (c) the amount of sugar (d) the amount of water
32. 32.🛟 Which rule keeps the turmeric test safe? (a) mix bathroom cleaners (b) sip each liquid (c) sniff each bottle hard (d) use only kitchen items
33. 33.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) sugar (c) vinegar (d) an empty bottle
34. 34.True or false: a balloon is needed for making butter. (a) True (b) False
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a magnet (c) lemon juice (d) turmeric powder
36. 36.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) almost nothing (b) dark brown words (c) a rainbow (d) blue words
37. 37.🧺 Which of these is needed for the turmeric test? (a) a balloon (b) a magnet (c) a comb (d) water
38. 38.🔍 Which is the odd one out? (a) browning lemon ink (b) freezing water (c) milk turning to curd (d) baking a cake
39. 39.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) sand and pebbles (d) a magnet
40. 40.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is kept the same? (a) sun or shade (b) amount of water drops (c) the time we wait

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