Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 81 · 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 does not dissolve in water. (a) False (b) True
2. 2.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “the cream temperature”? (a) we change it (b) we keep it the same (c) we measure it
4. 4.🍋 Why can’t you see the lemon writing once it dries? (a) it turned into air (b) dry juice is see-through (c) the paper ate it (d) the ink is magnetic
5. 5.🛟 Why must a plastic bag never go over anyone’s head? (a) it gets wet (b) it changes colour (c) it is too big (d) it can block breathing
6. 6.🍞 Does yeast need sunlight to make gas? (a) yeast needs it (b) yeast does not need it
7. 7.🔍 Which is the odd one out? (a) sugar (b) small pebbles (c) sawdust (d) sand
8. 8.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) oxygen (b) helium (c) carbon dioxide (d) hydrogen
9. 9.True or false: melting ice is a change that cannot be undone. (a) False (b) True
10. 10.🔍 Which is the odd one out? (a) warmth (b) water (c) salt (d) air
11. 11.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) cold water to rinse (c) a jar with a tight lid (d) a battery cell
12. 12.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “how clear the water is”? (a) we change it (b) we keep it the same (c) we measure it
13. 13.🧺 Which of these is needed for the muddy water filter? (a) muddy water (b) yeast (c) turmeric powder (d) a mirror
14. 14.⚖️ Fair test — does more baking soda blow the balloon up bigger? True or false: the amount of vinegar is what we measure. (a) True (b) False
15. 15.🧺 Do we need a comb for the turmeric test? (a) needed (b) not needed
16. 16.📘 Is the fizzing a sign that a new substance is made? (a) it is only melting (b) yes, a new gas forms (c) no, nothing changes (d) it is only dissolving
17. 17.🌱 Which of these does not sprout? (a) seeds on wet cotton (b) wet seeds in the dark (c) seeds in the freezer (d) wet seeds by a window
18. 18.🧈 Which of these is a change that cannot be undone? (a) baking a cake (b) melting ice (c) folding paper (d) dissolving salt
19. 19.🧺 Do we need a comb for the yeast balloon? (a) not needed (b) needed
20. 20.True or false: sugar is needed for a seed to sprout. (a) False (b) True
21. 21.True or false: glucose powder does not dissolve in water. (a) True (b) False
22. 22.🪴 Which of these is a job of the stem? (a) make food in sunlight (b) give out water vapour (c) hold up the leaves (d) make seeds
23. 23.🧺 Do we need a small bowl for sprouting seeds? (a) not needed (b) needed
24. 24.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a mirror (b) salt (c) a spoon (d) warm water
25. 25.🧺 Which of these is needed for making butter? (a) a magnet (b) a mirror (c) fresh cream (d) turmeric powder
26. 26.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
27. 27.🔍 Which is the odd one out? (a) chalk powder (b) cooking oil (c) table salt (d) small pebbles
28. 28.⚖️ Fair test — do seeds need water to sprout? Which of these is what we measure? (a) how many seeds sprout (b) the kind of seeds (c) wet or dry cotton (d) the number of seeds
29. 29.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: the same kind of bag is kept the same. (a) True (b) False
30. 30.🍋 What colour does the lemon writing turn when an adult warms it? (a) green (b) brown (c) white (d) blue
31. 31.🧺 Which of these is needed for the yeast balloon? (a) a magnet (b) a comb (c) warm water (d) a mirror
32. 32.🫗 How do we separate tea leaves from tea? (a) sieving (b) handpicking (c) winnowing (d) filtering
33. 33.🧂 Which of these dissolves in water? (a) sawdust (b) sand (c) food colour (d) cooking oil
34. 34.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is kept the same. (a) True (b) False
35. 35.📘 What do we call a seed starting to grow? (a) evaporation (b) pollination (c) condensation (d) germination
36. 36.True or false: dipping the cotton bud is a job a child can do. (a) True (b) False
37. 37.🪴 Through which part does a plant take in water from the soil? (a) the roots (b) the fruits (c) the flowers (d) the leaves
38. 38.🧺 Which of these is not needed for the turmeric test? (a) a dropper or spoon (b) a balloon (c) turmeric powder (d) lemon juice
39. 39.🧺 Do we need a funnel or spoon for the fizzy balloon? (a) not needed (b) needed
40. 40.🛟 Who should pour the warm water for the crystal experiment? (a) a grown-up (b) nobody needs to (c) the youngest child (d) a friend who is running

Free science experiments lessons, practice and worksheets at talentjr.in/science-experiments-for-kids