Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 885 · 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.🛟 Why is a plastic jar a good choice for shaking? (a) it is magnetic (b) it is heavier (c) it is hotter (d) it will not break
2. 2.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we measure it (b) we keep it the same (c) we change it
3. 3.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
4. 4.🫧 Is soap solution an acid, a base or neutral? (a) a base (b) an acid (c) neutral
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a funnel (c) muddy water (d) turmeric powder
6. 6.True or false: a rubber band is needed for the leafy bag test. (a) True (b) False
7. 7.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) a huge eruption (c) the balloon bursts (d) very little fizzing
8. 8.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we change it (b) we measure it (c) we keep it the same
9. 9.🪴 Which of these is a job of the leaves? (a) give out water vapour (b) carry water upward (c) hold the plant in soil (d) take in water from soil
10. 10.🌱 Which of these is not needed for a seed to sprout? (a) water (b) sugar (c) warmth (d) air
11. 11.🛟 What should you do if vinegar splashes in your eye? (a) rub it hard (b) ignore it (c) add baking soda (d) rinse with clean water
12. 12.📘 What do we call a seed starting to grow? (a) evaporation (b) germination (c) pollination (d) condensation
13. 13.🧂 Does cooking oil dissolve in water? (a) dissolves in water (b) does not dissolve
14. 14.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
15. 15.True or false: a magnet is not needed for the yeast balloon. (a) False (b) True
16. 16.🟡 Which of these turns turmeric reddish-brown? (a) tamarind water (b) lemon juice (c) vinegar (d) soap solution
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) spoons of baking soda (b) size of the balloon (c) the kind of balloon (d) the amount of vinegar
18. 18.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) putting the iron away (c) plugging in the iron (d) cutting the lemon
19. 19.🧺 Do we need a small bowl for sprouting seeds? (a) needed (b) not needed
20. 20.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) water (c) a battery cell (d) white paper strips
21. 21.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same cotton bud is kept the same. (a) True (b) False
22. 22.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the same glass (b) the filter material (c) how clear the water is
23. 23.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the filter material is the one thing we change. (a) False (b) True
24. 24.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same bowls (b) wet or dry cotton (c) the same place (d) how many seeds sprout
25. 25.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it grows faster (b) it flowers more (c) it wilts and droops (d) it turns blue
26. 26.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) lemon juice (d) detergent water
27. 27.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) salt (b) a piece of string (c) a balloon (d) a shallow dish
28. 28.True or false: a potted plant is not needed for the leafy bag test. (a) False (b) True
29. 29.🧺 Which of these is needed for the fizzy balloon? (a) a battery cell (b) a magnet (c) baking soda (d) a mirror
30. 30.🧺 Do we need a few hours for the leafy bag test? (a) not needed (b) needed
31. 31.True or false: a rubber band is not needed for the leafy bag test. (a) True (b) False
32. 32.🧺 Which of these is needed for sprouting seeds? (a) a battery cell (b) a magnet (c) cotton wool (d) a balloon
33. 33.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a magnet (b) a clean glass (c) sand and pebbles (d) muddy water
34. 34.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we keep it the same (b) we change it (c) we measure it
35. 35.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
36. 36.True or false: a battery cell is needed for the turmeric test. (a) True (b) False
37. 37.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a shallow dish (b) a spoon (c) a battery cell (d) a piece of string
39. 39.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is kept the same. (a) True (b) False
40. 40.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) sugar crystals form (b) salt crystals form (c) it turns to butter (d) it turns to oil

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