Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 409 · 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.🔍 Which is the odd one out? (a) letting the paper dry (b) reading the message (c) cutting the lemon (d) dipping the cotton bud
2. 2.True or false: detergent water keeps turmeric yellow. (a) False (b) True
3. 3.True or false: hold up the leaves is a job of the leaves. (a) False (b) True
4. 4.🧺 Three of these are needed for the fizzy balloon. Which one is NOT needed? (a) vinegar (b) a tray for spills (c) a comb (d) baking soda
5. 5.True or false: seeds on wet cotton sprouts in a few days. (a) True (b) False
6. 6.🧺 Do we need a mirror for growing salt crystals? (a) not needed (b) needed
7. 7.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: size of the balloon is the one thing we change. (a) True (b) False
8. 8.🔍 Which is the odd one out? (a) salt (b) sunlight (c) vinegar (d) time
9. 9.🌱 Which of these is needed for a seed to sprout? (a) sugar (b) sunlight (c) air (d) salt
10. 10.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) spoons of baking soda (b) the same bottle (c) the kind of balloon (d) the amount of vinegar
11. 11.⚖️ Fair test — does a cloth filter or a cotton filter give clearer water? True or false: how clear the water is is what we measure. (a) False (b) True
12. 12.🧺 Do we need turmeric powder for the leafy bag test? (a) needed (b) not needed
13. 13.🧺 Do we need a battery cell for growing salt crystals? (a) needed (b) not needed
14. 14.🧂 Which of these does not dissolve in water? (a) food colour (b) cooking oil (c) table salt (d) glucose powder
15. 15.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the turmeric paper is the one thing we change. (a) False (b) True
16. 16.⚖️ Fair test — does lemon juice or orange juice make darker secret writing? True or false: the same paper is kept the same. (a) False (b) True
17. 17.🍞 Which of these is something yeast needs? (a) sunlight (b) salt (c) sugar (d) a magnet
18. 18.🧺 Do we need sand and pebbles for the muddy water filter? (a) needed (b) not needed
19. 19.True or false: a mirror is needed for making butter. (a) False (b) True
20. 20.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the same bottles is what we measure. (a) True (b) False
21. 21.True or false: yeast is needed for the secret lemon message. (a) True (b) False
22. 22.🔍 Which is the odd one out? (a) cooking an egg (b) rusting iron (c) dissolving salt (d) baking a cake
23. 23.🧺 Do we need a dropper or spoon for the turmeric test? (a) not needed (b) needed
24. 24.True or false: a battery cell is not needed for the turmeric test. (a) False (b) True
25. 25.🧺 Do we need yeast for the secret lemon message? (a) needed (b) not needed
26. 26.🛟 Where should you keep the crystal dish while it dries? (a) safe from small children (b) on the edge of a table (c) next to the baby (d) in a busy doorway
27. 27.True or false: freezing water is a change that can be undone. (a) True (b) False
28. 28.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is kept the same? (a) the liquid we test (b) the colour we see (c) the light we look in
29. 29.⚖️ 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 keep it the same (b) we measure it (c) we change it
30. 30.⚖️ Fair test — do seeds need water to sprout? True or false: the kind of seeds is what we measure. (a) False (b) True
31. 31.True or false: sugar is needed for the yeast balloon. (a) True (b) False
32. 32.🧺 Do we need water for sprouting seeds? (a) needed (b) not needed
33. 33.🛟 Which rule keeps the turmeric test safe? (a) sniff each bottle hard (b) sip each liquid (c) mix bathroom cleaners (d) use only kitchen items
34. 34.🧺 Which of these is needed for the turmeric test? (a) a mirror (b) a comb (c) yeast (d) soap solution
35. 35.🔍 Which is the odd one out? (a) dipping the cotton bud (b) putting the iron away (c) plugging in the iron (d) cutting the lemon
36. 36.🫗 Which of these is done by handpicking? (a) bran from wheat flour (b) bad grains from rice (c) salt from sea water (d) gravel from fine sand
37. 37.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the light we look in”? (a) we keep it the same (b) we measure it (c) we change it
38. 38.🔍 Which is the odd one out? (a) baking soda water (b) salt water (c) sugar water (d) plain water
39. 39.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? Which of these is what we measure? (a) sunny or shady place (b) days to see crystals (c) the same dish (d) the amount of salt
40. 40.🧂 Why do crystals appear as the dish dries? (a) the dish melts (b) salt grows roots (c) salt eats water (d) water evaporates

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