Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 500 · 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: an empty bottle is needed for the fizzy balloon. (a) True (b) False
2. 2.True or false: browning lemon ink is a change that cannot be undone. (a) True (b) False
3. 3.🧈 Which of these is a change that cannot be undone? (a) melting ice (b) melting butter (c) baking a cake (d) freezing water
4. 4.True or false: hold up the leaves is a job of the stem. (a) True (b) False
5. 5.🔮 Predict: you pour muddy water through two layers of cloth instead of one. The water comes out ___. (a) salty (b) clearer (c) hot (d) muddier
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is what we measure. (a) True (b) False
7. 7.🧺 Do we need a bowl for making butter? (a) not needed (b) needed
8. 8.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) sunlight (d) a battery cell
9. 9.🔍 Which is the odd one out? (a) salt (b) sunlight (c) a magnet (d) time
10. 10.📘 Is the fizzing a sign that a new substance is made? (a) no, nothing changes (b) it is only melting (c) yes, a new gas forms (d) it is only dissolving
11. 11.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) it turns to sugar (b) it turns to sand (c) yes, all of it (d) no, salt passes through
12. 12.🧺 Do we need a potted plant for the leafy bag test? (a) needed (b) not needed
13. 13.True or false: orange juice is a base. (a) False (b) True
14. 14.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) True (b) False
15. 15.🧺 Which of these is needed for the yeast balloon? (a) a mirror (b) a battery cell (c) a magnet (d) a small bottle
16. 16.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) turmeric powder (b) cold water to rinse (c) a jar with a tight lid (d) a bowl
17. 17.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
18. 18.🌱 Which of these is needed for a seed to sprout? (a) sunlight (b) sugar (c) warmth (d) salt
19. 19.🍋 Secret message: who does this step — letting the paper dry? (a) an adult does it (b) a child can do it
20. 20.🪴 Which of these is a job of the stem? (a) hold the plant in soil (b) hold up the leaves (c) make food in sunlight (d) give out water vapour
21. 21.🍋 Which of these steps is a job a child can do? (a) dipping the cotton bud (b) ironing the paper (c) plugging in the iron (d) putting the iron away
22. 22.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of salt”? (a) we keep it the same (b) we change it (c) we measure it
23. 23.🧂 Does chalk powder dissolve in water? (a) does not dissolve (b) dissolves in water
24. 24.🍞 Does yeast need sugar to make gas? (a) yeast does not need it (b) yeast needs it
25. 25.🧈 Can this change be undone: dissolving salt? (a) can be undone (b) cannot be undone
26. 26.⚖️ 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 the one thing we change. (a) False (b) True
27. 27.⚖️ Fair test — does cold cream turn into butter faster than warm cream? True or false: the amount of cream is kept the same. (a) False (b) True
28. 28.🔮 Predict: you wait 2 hours instead of 10 minutes. What happens? (a) it turns to bread (b) the balloon is smaller (c) the balloon is bigger (d) it shrinks to nothing
29. 29.🔍 Which is the odd one out? (a) melting ice (b) milk turning to curd (c) folding paper (d) freezing water
30. 30.🍞 Where is yeast used in the kitchen? (a) to clean floors (b) to wash dishes (c) to make bread rise (d) to colour rice
31. 31.🪴 Which part of a plant does this job: make seeds? (a) leaves (b) stem (c) flower (d) roots
32. 32.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) both stay behind (b) tea stays behind (c) leaves stay behind (d) leaves pass through
33. 33.True or false: a bowl is not needed for making butter. (a) True (b) False
34. 34.🫗 Which of these is done by winnowing? (a) tea leaves from tea (b) gravel from fine sand (c) chaff from wheat grain (d) bran from wheat flour
35. 35.🔍 What do you see after shaking cream in a jar for a long time? (a) bubbles of gas (b) lumps of butter (c) clear water only (d) sugar crystals
36. 36.🔍 Which is the odd one out? (a) vinegar (b) detergent water (c) salt water (d) lemon juice
37. 37.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it grows much faster (b) it bursts at once (c) it grows very little (d) it turns yellow
38. 38.⚖️ 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
39. 39.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “how hard we shake”? (a) we keep it the same (b) we measure it (c) we change it
40. 40.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) a small bottle (b) warm water (c) dry yeast (d) turmeric powder

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