Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 210 · 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 growing salt crystals. Which one is NOT needed? (a) warm water (b) a shallow dish (c) a spoon (d) a balloon
2. 2.⚖️ 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) True (b) False
3. 3.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the water temperature is kept the same. (a) False (b) True
4. 4.True or false: freezing water is a change that can be undone. (a) True (b) False
5. 5.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a funnel or spoon (b) baking soda (c) a mirror (d) an empty bottle
6. 6.True or false: plugging in the iron is a job a child can do. (a) False (b) True
7. 7.🫧 Which of these is a base? (a) orange juice (b) baking soda water (c) salt water (d) sugar water
8. 8.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) frozen (c) saturated (d) empty
9. 9.True or false: water is needed for a seed to sprout. (a) False (b) True
10. 10.🧺 Which of these is not needed for the fizzy balloon? (a) a balloon (b) an empty bottle (c) baking soda (d) a mirror
11. 11.🔮 Predict: you use plain water instead of vinegar. What happens? (a) it turns to honey (b) the balloon bursts (c) a huge eruption (d) very little fizzing
12. 12.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it changes colour (c) it can block breathing (d) it is too big
13. 13.🧺 Do we need white paper for the secret lemon message? (a) needed (b) not needed
14. 14.🌱 Is sunlight needed for a seed to sprout? (a) not needed to sprout (b) needed to sprout
15. 15.True or false: a jar with a tight lid is not needed for making butter. (a) False (b) True
16. 16.True or false: muddy water is needed for the muddy water filter. (a) False (b) True
17. 17.True or false: wet seeds in the dark does not sprout. (a) False (b) True
18. 18.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same place (b) wet or dry cotton (c) the same bowls (d) how many seeds sprout
19. 19.🧺 Do we need white paper strips for the turmeric test? (a) not needed (b) needed
20. 20.🛟 Turmeric stains clothes. What should you wear? (a) your best clothes (b) your school uniform (c) an old shirt or apron (d) a white party dress
21. 21.🍋 A reddish turmeric spot gets a few drops of lemon juice. What happens? (a) it turns blue (b) it turns darker red (c) it disappears (d) it turns yellow again
22. 22.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of sugar”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.True or false: a magnet is needed for sprouting seeds. (a) True (b) False
24. 24.🌱 Which of these sprouts in a few days? (a) seeds in the freezer (b) boiled seeds (c) seeds on wet cotton (d) seeds on dry cotton
25. 25.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the liquid we test (c) the colour we see (d) the turmeric paper
26. 26.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) bright blue (b) reddish (c) white at once (d) green
27. 27.🍋 Secret message: who does this step — putting the iron away? (a) an adult does it (b) a child can do it
28. 28.🧺 Do we need a magnet for making butter? (a) not needed (b) needed
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? Which of these is what we measure? (a) amount of water drops (b) sun or shade (c) the kind of plant (d) the same kind of bag
30. 30.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) germs are invisible (c) clear water is hot (d) clear water is sweet
31. 31.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “the same bottle”? (a) we change it (b) we measure it (c) we keep it the same
32. 32.🔍 Which is the odd one out? (a) air (b) water (c) sugar (d) warmth
33. 33.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is the one thing we change? (a) the kind of salt (b) the amount of water (c) sunny or shady place (d) days to see crystals
34. 34.🧺 Which of these is not needed for the muddy water filter? (a) sand and pebbles (b) turmeric powder (c) cotton or cloth (d) a funnel
35. 35.🧺 Which of these is needed for the yeast balloon? (a) dry yeast (b) a magnet (c) a mirror (d) a battery cell
36. 36.🫧 Is detergent water an acid, a base or neutral? (a) a base (b) an acid (c) neutral
37. 37.🧺 Which of these is not needed for the secret lemon message? (a) white paper (b) a battery cell (c) a small bowl (d) an adult with an iron
38. 38.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) lick your fingers (b) wash your hands (c) rub your eyes (d) skip washing
39. 39.🛟 What should you do after touching soil or seeds? (a) lick your fingers (b) wash your hands (c) skip washing (d) rub your eyes
40. 40.True or false: wet seeds by a window does not sprout. (a) True (b) False

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