Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 857 · 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.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a dropper or spoon (b) water (c) white paper strips (d) a battery cell
2. 2.True or false: salt is something yeast needs. (a) False (b) True
3. 3.⚖️ 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 same bottle (c) spoons of baking soda (d) the amount of vinegar
4. 4.True or false: sugar water is neutral. (a) False (b) True
5. 5.📘 What do we call plants giving out water vapour from their leaves? (a) digestion (b) transpiration (c) reflection (d) germination
6. 6.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is the one thing we change. (a) False (b) True
7. 7.🌱 Which of these sprouts in a few days? (a) seeds on dry cotton (b) seeds on wet cotton (c) seeds in the freezer (d) boiled seeds
8. 8.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
9. 9.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: spoons of baking soda is kept the same. (a) False (b) True
10. 10.🍋 Secret message: who does this step — ironing the paper? (a) a child can do it (b) an adult does it
11. 11.🛟 Why must children keep their fingers away from the iron? (a) it is sticky (b) it can burn skin (c) it is cold (d) it is magnetic
12. 12.🧺 Do we need a cotton bud for the secret lemon message? (a) needed (b) not needed
13. 13.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) False (b) True
14. 14.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? Which of these is the one thing we change? (a) the iron setting (b) the kind of juice (c) the same paper (d) how dark the writing is
15. 15.True or false: a potted plant is needed for the leafy bag test. (a) False (b) True
16. 16.🔍 Which is the odd one out? (a) water (b) warmth (c) sunlight (d) air
17. 17.🍋 Secret message: who does this step — dipping the cotton bud? (a) an adult does it (b) a child can do it
18. 18.🧺 Do we need a small bottle for the yeast balloon? (a) not needed (b) needed
19. 19.🧺 Which of these is not needed for the leafy bag test? (a) a rubber band (b) a clear plastic bag (c) sunlight (d) a magnet
20. 20.🛟 Who should use the hot iron in the secret message experiment? (a) any child (b) the youngest child (c) only an adult (d) whoever is fastest
21. 21.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) a dropper or spoon (c) white paper strips (d) yeast
22. 22.🧺 Which of these is needed for the leafy bag test? (a) a mirror (b) a clear plastic bag (c) yeast (d) vinegar
23. 23.True or false: cooking an egg is a change that can be undone. (a) True (b) False
24. 24.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) air (c) salt (d) soil
25. 25.🍞 Does yeast need sugar to make gas? (a) yeast needs it (b) yeast does not need it
26. 26.⚖️ 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
27. 27.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) sugar (b) vinegar (c) a funnel or spoon (d) an empty bottle
28. 28.🔍 Which is the odd one out? (a) soap solution (b) baking soda water (c) detergent water (d) sugar water
29. 29.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) water (c) a mirror (d) a small bowl
30. 30.⚖️ Fair test — do seeds need water to sprout? True or false: wet or dry cotton is the one thing we change. (a) True (b) False
31. 31.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) water (b) white paper strips (c) soap solution (d) a balloon
32. 32.🧺 Which of these is needed for growing salt crystals? (a) a spoon (b) a battery cell (c) turmeric powder (d) a mirror
33. 33.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is the one thing we change. (a) False (b) True
34. 34.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) take in water from soil (c) hold up the leaves (d) make seeds
35. 35.🔍 Which is the odd one out? (a) plain water (b) salt water (c) tamarind water (d) sugar water
36. 36.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is what we measure. (a) True (b) False
37. 37.🔍 Which is the odd one out? (a) warm water (b) time (c) sugar (d) vinegar
38. 38.True or false: baking soda water is a base. (a) False (b) True
39. 39.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of yeast”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🔍 Which is the odd one out? (a) dissolving salt (b) melting ice (c) freezing water (d) rusting iron

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