Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 295 · 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.🔮 Predict: you use sugar instead of salt. What happens as it dries? (a) salt crystals form (b) it turns to butter (c) it turns to oil (d) sugar crystals form
2. 2.🍞 Does yeast need a magnet to make gas? (a) yeast needs it (b) yeast does not need it
3. 3.True or false: a cotton bud is not needed for the secret lemon message. (a) True (b) False
4. 4.⚖️ 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) sun or shade (b) the size of the plant (c) amount of water drops (d) the time we wait
5. 5.🛟 Why should you never drink water just because it looks clear? (a) clear water is salty (b) clear water is sweet (c) germs are invisible (d) clear water is hot
6. 6.🧺 Three of these are needed for sprouting seeds. Which one is NOT needed? (a) a magnet (b) water (c) a small bowl (d) cotton wool
7. 7.True or false: tea leaves from tea is done by filtering. (a) True (b) False
8. 8.⚖️ 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
9. 9.🧺 Which of these is needed for making butter? (a) a bowl (b) a battery cell (c) yeast (d) a magnet
10. 10.🧺 Do we need a bowl for making butter? (a) needed (b) not needed
11. 11.True or false: a paper clip is needed for the yeast balloon. (a) False (b) True
12. 12.🧈 Before the butter appears, what does the cream turn into? (a) ice (b) powder (c) thick whipped cream (d) clear water
13. 13.🟡 Turmeric paper meets soap solution. What happens? (a) turns reddish-brown (b) stays yellow
14. 14.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) days to see crystals (b) the amount of salt (c) the amount of water (d) sunny or shady place
15. 15.🔍 Which is the odd one out? (a) salt (b) sugar (c) sunlight (d) a magnet
16. 16.True or false: a mirror is needed for growing salt crystals. (a) True (b) False
17. 17.🫧 Is sugar water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
18. 18.🪴 Which part of a plant does this job: give out water vapour? (a) roots (b) leaves (c) stem (d) flower
19. 19.True or false: ironing the paper is a job a child can do. (a) True (b) False
20. 20.🛟 Why must a plastic bag never go over anyone’s head? (a) it can block breathing (b) it gets wet (c) it is too big (d) it changes colour
21. 21.🔍 Which is the odd one out? (a) table salt (b) glucose powder (c) sand (d) baking soda
22. 22.🟡 Which of these turns turmeric reddish-brown? (a) soap solution (b) vinegar (c) tamarind water (d) plain water
23. 23.True or false: a few hours is not needed for the leafy bag test. (a) True (b) False
24. 24.🧺 Do we need a magnet for the yeast balloon? (a) needed (b) not needed
25. 25.True or false: table salt does not dissolve in water. (a) True (b) False
26. 26.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a magnet (b) vinegar (c) a balloon (d) an empty bottle
27. 27.🧺 Do we need warm water for the yeast balloon? (a) not needed (b) needed
28. 28.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? What do we do with “the iron setting”? (a) we change it (b) we keep it the same (c) we measure it
29. 29.🛟 Why must children keep their fingers away from the iron? (a) it can burn skin (b) it is cold (c) it is sticky (d) it is magnetic
30. 30.🧂 Which of these does not dissolve in water? (a) sugar (b) glucose powder (c) small pebbles (d) baking soda
31. 31.True or false: a battery cell is not needed for the leafy bag test. (a) True (b) False
32. 32.🛟 Turmeric stains clothes. What should you wear? (a) an old shirt or apron (b) your school uniform (c) a white party dress (d) your best clothes
33. 33.🪴 Where did the water inside the bag come from? (a) the rubber band (b) the leaves (c) the rain (d) the plastic
34. 34.🍞 Where is yeast used in the kitchen? (a) to make bread rise (b) to clean floors (c) to colour rice (d) to wash dishes
35. 35.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “size of the balloon”? (a) we change it (b) we keep it the same (c) we measure it
36. 36.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) a tray for spills (b) a mirror (c) a funnel or spoon (d) baking soda
37. 37.True or false: hold up the leaves is a job of the flower. (a) True (b) False
38. 38.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? What do we do with “the same funnel”? (a) we keep it the same (b) we measure it (c) we change it
39. 39.🫧 Which of these is neutral? (a) baking soda water (b) tamarind water (c) salt water (d) curd
40. 40.True or false: yeast is needed for making butter. (a) False (b) True

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