Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 591 · 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.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is the one thing we change? (a) the size of the plant (b) the time we wait (c) the same kind of bag (d) sun or shade
2. 2.🧺 Which of these is not needed for the yeast balloon? (a) warm water (b) a magnet (c) a small bottle (d) sugar
3. 3.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) soap solution (b) a battery cell (c) water (d) lemon juice
4. 4.🫧 Is baking soda water an acid, a base or neutral? (a) neutral (b) an acid (c) a base
5. 5.🔍 Which is the odd one out? (a) dipping the cotton bud (b) reading the message (c) letting the paper dry (d) putting the iron away
6. 6.⚖️ 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) False (b) True
7. 7.True or false: vinegar is a base. (a) False (b) True
8. 8.🧺 Which of these is not needed for the secret lemon message? (a) a small bowl (b) a battery cell (c) an adult with an iron (d) a cotton bud
9. 9.🔍 Which is the odd one out? (a) soil (b) salt (c) sugar (d) air
10. 10.🔮 Predict: which gives more drops in the bag — a hot sunny day or a cool cloudy day? (a) both the same (b) the hot sunny day (c) the cool cloudy day (d) neither of them
11. 11.🫧 Which of these is neutral? (a) curd (b) orange juice (c) tamarind water (d) plain water
12. 12.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
13. 13.🍞 Which of these is something yeast needs? (a) time (b) salt (c) vinegar (d) sunlight
14. 14.🧺 Do we need lemon juice for the secret lemon message? (a) not needed (b) needed
15. 15.True or false: turmeric powder is not needed for the leafy bag test. (a) False (b) True
16. 16.🧺 Which of these is needed for the muddy water filter? (a) a battery cell (b) turmeric powder (c) a balloon (d) muddy water
17. 17.🛟 What should you do if vinegar splashes in your eye? (a) ignore it (b) add baking soda (c) rinse with clean water (d) rub it hard
18. 18.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the turmeric paper”? (a) we change it (b) we measure it (c) we keep it the same
19. 19.🪴 Which of these is a job of the leaves? (a) make food in sunlight (b) hold the plant in soil (c) hold up the leaves (d) make seeds
20. 20.True or false: boiled seeds sprouts in a few days. (a) False (b) True
21. 21.🧺 Which of these is needed for sprouting seeds? (a) a balloon (b) cotton wool (c) a magnet (d) a mirror
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: sun or shade is kept the same. (a) True (b) False
23. 23.🧈 Which of these is a change that can be undone? (a) browning lemon ink (b) freezing water (c) milk turning to curd (d) rusting iron
24. 24.True or false: take in water from soil is a job of the roots. (a) True (b) False
25. 25.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) wash your hands (b) skip washing (c) rub your eyes (d) lick your fingers
26. 26.True or false: dipping the cotton bud is a job for an adult. (a) True (b) False
27. 27.🔮 Predict (do not try it): yeast is put in boiling water. What happens? (a) it glows (b) the yeast is killed (c) it grows faster (d) it turns to sugar
28. 28.🔮 Predict: crystals grow slowly where nobody disturbs them. How big are they? (a) no crystals (b) smaller crystals (c) liquid crystals (d) bigger crystals
29. 29.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) the amount of cream (c) time to make butter
30. 30.🪴 Which part of a plant does this job: take in water from soil? (a) leaves (b) stem (c) flower (d) roots
31. 31.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) cotton or cloth (b) a clean glass (c) a magnet (d) muddy water
32. 32.🔮 Predict: you cover the dish so no water can escape. What happens? (a) it fizzes (b) it turns sweet (c) crystals grow faster (d) few or no crystals
33. 33.🔍 Which is the odd one out? (a) dipping the cotton bud (b) plugging in the iron (c) writing the message (d) letting the paper dry
34. 34.🔍 Which is the odd one out? (a) ironing the paper (b) plugging in the iron (c) putting the iron away (d) writing the message
35. 35.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
36. 36.📘 Vinegar is an acid and baking soda is a base. What happens when they meet? (a) they freeze (b) they become magnets (c) they float apart (d) they react
37. 37.True or false: soap solution turns turmeric reddish-brown. (a) False (b) True
38. 38.🍞 Does yeast need time to make gas? (a) yeast does not need it (b) yeast needs it
39. 39.🔍 Which is the odd one out? (a) detergent water (b) soap solution (c) baking soda water (d) sugar water
40. 40.📘 The browning of lemon juice with heat is a ___ change. (a) magnetic (b) musical (c) physical (d) chemical

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