Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 762 · 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.🛟 How should the plastic bag be tied around the branch? (a) with a hot glue gun (b) gently, not too tight (c) with sharp wire (d) as tight as possible
2. 2.True or false: yeast is needed for making butter. (a) False (b) True
3. 3.🧺 Do we need yeast for the leafy bag test? (a) needed (b) not needed
4. 4.🫗 How do we separate sugar from sugar water? (a) filtering (b) evaporating (c) sieving (d) handpicking
5. 5.🧺 Do we need baking soda for the fizzy balloon? (a) not needed (b) needed
6. 6.🧺 Which of these is needed for the turmeric test? (a) yeast (b) a mirror (c) a battery cell (d) soap solution
7. 7.🧂 Does table salt dissolve in water? (a) dissolves in water (b) does not dissolve
8. 8.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is what we measure? (a) the same funnel (b) the same muddy water (c) how clear the water is (d) the same glass
9. 9.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is the one thing we change? (a) time to make butter (b) the same jar (c) the cream temperature (d) how hard we shake
10. 10.🧺 Do we need a shallow dish for growing salt crystals? (a) not needed (b) needed
11. 11.⚖️ 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 time we wait (b) the kind of plant (c) the size of the plant (d) sun or shade
12. 12.True or false: seeds on wet cotton sprouts in a few days. (a) False (b) True
13. 13.🔮 Predict: a plant gets no water for many days in summer. What happens? (a) it flowers more (b) it wilts and droops (c) it grows faster (d) it turns blue
14. 14.🍋 Which of these steps is a job for an adult? (a) writing the message (b) letting the paper dry (c) ironing the paper (d) reading the message
15. 15.🧺 Do we need a balloon for the fizzy balloon? (a) not needed (b) needed
16. 16.🧈 Can this change be undone: melting ice? (a) can be undone (b) cannot be undone
17. 17.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of yeast is kept the same. (a) False (b) True
18. 18.True or false: sawdust dissolves in water. (a) False (b) True
19. 19.🧺 Do we need water for sprouting seeds? (a) needed (b) not needed
20. 20.🧺 Which of these is needed for making butter? (a) yeast (b) a mirror (c) fresh cream (d) a magnet
21. 21.🔮 Predict: seeds on wet cotton are kept in a dark cupboard. Will they sprout? (a) yes, they sprout (b) they melt (c) no, never (d) they turn to stones
22. 22.🛟 What should you do after handling muddy water? (a) lick your fingers (b) wipe hands on face (c) nothing is needed (d) wash hands afterwards
23. 23.🧂 Why do we stir in salt until no more will dissolve? (a) to make it very salty (b) to cool the water (c) to make it fizz (d) to change its colour
24. 24.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) cotton wool (b) turmeric powder (c) moong seeds (d) water
25. 25.🔍 Which is the odd one out? (a) baking a cake (b) milk turning to curd (c) cooking an egg (d) freezing water
26. 26.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the amount poured”? (a) we keep it the same (b) we measure it (c) we change it
27. 27.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the same cotton bud”? (a) we measure it (b) we change it (c) we keep it the same
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the ironing time”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🧺 Do we need a funnel for the muddy water filter? (a) needed (b) not needed
30. 30.🛟 What should you do if vinegar splashes in your eye? (a) add baking soda (b) rub it hard (c) rinse with clean water (d) ignore it
31. 31.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: the same muddy water is what we measure. (a) True (b) False
32. 32.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? Which of these is kept the same? (a) the filter material (b) how clear the water is (c) the same glass
33. 33.🛟 Some seeds from shops are coated with chemicals. What is the safe rule? (a) throw them at friends (b) never put seeds in mouth (c) eat a few to check (d) feed them to pets
34. 34.🔍 What do you see inside the plastic bag after a few hours in the sun? (a) nothing at all (b) salt crystals (c) tiny water drops (d) tiny insects
35. 35.🔍 What do you see after shaking cream in a jar for a long time? (a) bubbles of gas (b) sugar crystals (c) clear water only (d) lumps of butter
36. 36.🪴 Which part of a plant does this job: make seeds? (a) roots (b) leaves (c) flower (d) stem
37. 37.🧺 Do we need turmeric powder for the secret lemon message? (a) not needed (b) needed
38. 38.🔮 Predict: you use more vinegar and more baking soda. What happens to the balloon? (a) there is no change (b) it turns blue (c) it grows bigger (d) it shrinks
39. 39.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we change it (b) we measure it (c) we keep it the same
40. 40.⚖️ 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) False (b) True

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