Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 963 · 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: milk turning to curd is a change that can be undone. (a) False (b) True
2. 2.🫧 Is plain water an acid, a base or neutral? (a) an acid (b) a base (c) neutral
3. 3.🔍 Which is the odd one out? (a) folding paper (b) browning lemon ink (c) dissolving salt (d) melting butter
4. 4.🧺 Which of these is needed for the leafy bag test? (a) a rubber band (b) a mirror (c) vinegar (d) yeast
5. 5.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) a clean glass (b) a magnet (c) a funnel (d) muddy water
6. 6.🧺 Do we need vinegar for the leafy bag test? (a) not needed (b) needed
7. 7.🧺 Which of these is needed for the secret lemon message? (a) turmeric powder (b) a balloon (c) a magnet (d) an adult with an iron
8. 8.🍋 What colour does the lemon writing turn when an adult warms it? (a) brown (b) white (c) green (d) blue
9. 9.🔮 Predict: seeds on wet cotton are kept in the freezer. What happens? (a) they grow fruit (b) they do not sprout (c) they glow (d) they sprout faster
10. 10.🛟 How should the plastic bag be tied around the branch? (a) as tight as possible (b) with a hot glue gun (c) gently, not too tight (d) with sharp wire
11. 11.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the water temperature (b) the same bottles (c) the amount of yeast (d) size of the balloon
12. 12.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “how dark the writing is”? (a) we keep it the same (b) we measure it (c) we change it
13. 13.True or false: folding paper is a change that cannot be undone. (a) False (b) True
14. 14.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) True (b) False
15. 15.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is kept the same. (a) True (b) False
16. 16.🍞 Why do we add sugar to the yeast? (a) it is food for yeast (b) to colour it (c) to make it sweet (d) to make it heavy
17. 17.🛟 Lemon juice stings cuts and eyes. What should you do after the experiment? (a) rub your eyes (b) lick your fingers (c) wash your hands (d) skip washing
18. 18.🔮 Predict: a yellow curry stain on a shirt is washed with soap. What colour may it turn? (a) white at once (b) reddish (c) green (d) bright blue
19. 19.🧺 Do we need a balloon for making butter? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for the fizzy balloon? (a) a mirror (b) baking soda (c) a magnet (d) a seed
21. 21.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it is too big (c) it changes colour (d) it gets wet
22. 22.🧺 Do we need a jar with a tight lid for making butter? (a) not needed (b) needed
23. 23.🧺 Do we need a mirror for the yeast balloon? (a) not needed (b) needed
24. 24.True or false: a clear plastic bag is not needed for the leafy bag test. (a) False (b) True
25. 25.⚖️ 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) amount of water drops (b) sun or shade (c) the kind of plant (d) the same kind of bag
26. 26.True or false: orange juice is a base. (a) False (b) True
27. 27.🫧 Which gas fills the balloon in the baking soda and vinegar experiment? (a) carbon dioxide (b) hydrogen (c) oxygen (d) helium
28. 28.🧺 Which of these is not needed for the leafy bag test? (a) a clear plastic bag (b) a few hours (c) a magnet (d) a potted plant
29. 29.🪴 Which of these is a job of the stem? (a) make seeds (b) give out water vapour (c) take in water from soil (d) hold up the leaves
30. 30.🧺 Which of these is not needed for making butter? (a) cold water to rinse (b) a jar with a tight lid (c) a timer (d) yeast
31. 31.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
32. 32.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) how hard we shake (b) the same jar (c) the amount of cream (d) the cream temperature
33. 33.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) turmeric powder (b) soap solution (c) lemon juice (d) a magnet
34. 34.🧺 Do we need white paper for the secret lemon message? (a) not needed (b) needed
35. 35.🛟 Turmeric stains clothes. What should you wear? (a) a white party dress (b) your best clothes (c) your school uniform (d) an old shirt or apron
36. 36.🧺 Which of these is needed for the turmeric test? (a) a battery cell (b) a balloon (c) a dropper or spoon (d) yeast
37. 37.True or false: a comb is not needed for the fizzy balloon. (a) True (b) False
38. 38.🧺 Which of these is not needed for sprouting seeds? (a) cotton wool (b) a few days (c) yeast (d) a small bowl
39. 39.🪴 Which of these is a job of the leaves? (a) give out water vapour (b) hold the plant in soil (c) make seeds (d) take in water from soil
40. 40.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a seed (c) a funnel or spoon (d) baking soda

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