Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 185 · 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: lemon juice is needed for the turmeric test. (a) False (b) True
2. 2.🧈 Which of these is a change that can be undone? (a) cooking an egg (b) rusting iron (c) dissolving salt (d) browning lemon ink
3. 3.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is kept the same? (a) the cream temperature (b) time to make butter (c) the same jar
4. 4.🫗 Which of these is done by filtering? (a) bran from wheat flour (b) bad grains from rice (c) sugar from sugar water (d) mud from water
5. 5.True or false: a tray for spills is needed for the fizzy balloon. (a) False (b) True
6. 6.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? True or false: the amount of sugar is kept the same. (a) True (b) False
7. 7.True or false: reading the message is a job a child can do. (a) True (b) False
8. 8.🧺 Do we need salt for growing salt crystals? (a) needed (b) not needed
9. 9.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
10. 10.🧺 Do we need turmeric powder for making butter? (a) needed (b) not needed
11. 11.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? Which of these is the one thing we change? (a) the light we look in (b) the turmeric paper (c) the colour we see (d) the liquid we test
12. 12.🔮 Predict: you leave out the sugar. What happens to the balloon? (a) it bursts at once (b) it grows much faster (c) it grows very little (d) it turns yellow
13. 13.🫧 Is sugar water an acid, a base or neutral? (a) neutral (b) a base (c) an acid
14. 14.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) time to make butter (b) the cream temperature (c) the amount of cream (d) how hard we shake
15. 15.🛟 Why must a plastic bag never go over anyone’s head? (a) it is too big (b) it can block breathing (c) it changes colour (d) it gets wet
16. 16.🧺 Which of these is needed for the fizzy balloon? (a) a tray for spills (b) a seed (c) a battery cell (d) a magnet
17. 17.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is the one thing we change? (a) the amount of vinegar (b) size of the balloon (c) the kind of balloon (d) spoons of baking soda
18. 18.🧺 Which of these is not needed for sprouting seeds? (a) a few days (b) a small bowl (c) a magnet (d) moong seeds
19. 19.True or false: a balloon is needed for the turmeric test. (a) True (b) False
20. 20.🌱 Which of these is needed for a seed to sprout? (a) water (b) sugar (c) soil (d) salt
21. 21.True or false: soap solution keeps turmeric yellow. (a) False (b) True
22. 22.⚖️ Fair test — does cold cream turn into butter faster than warm cream? What do we do with “time to make butter”? (a) we measure it (b) we keep it the same (c) we change it
23. 23.🔮 Predict: you filter salty water through cloth. Does the salt stay on the cloth? (a) yes, all of it (b) no, salt passes through (c) it turns to sand (d) it turns to sugar
24. 24.🧺 Do we need a balloon for growing salt crystals? (a) not needed (b) needed
25. 25.🛟 Which rule keeps the turmeric test safe? (a) use only kitchen items (b) sniff each bottle hard (c) sip each liquid (d) mix bathroom cleaners
26. 26.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? What do we do with “the amount of water”? (a) we keep it the same (b) we change it (c) we measure it
27. 27.🛟 The water for the yeast should be ___. (a) boiling hot (b) ice cold (c) warm, not hot (d) very salty
28. 28.⚖️ Fair test — do seeds need water to sprout? True or false: how many seeds sprout is what we measure. (a) False (b) True
29. 29.🧺 Do we need a funnel for the muddy water filter? (a) not needed (b) needed
30. 30.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
31. 31.True or false: milk turning to curd is a change that cannot be undone. (a) False (b) True
32. 32.🍋 Why can’t you see the lemon writing once it dries? (a) the ink is magnetic (b) the paper ate it (c) it turned into air (d) dry juice is see-through
33. 33.🧺 Do we need a spoon for growing salt crystals? (a) needed (b) not needed
34. 34.🔍 Which is the odd one out? (a) lemon juice (b) vinegar (c) plain water (d) orange juice
35. 35.🧺 Three of these are needed for the turmeric test. Which one is NOT needed? (a) a magnet (b) a dropper or spoon (c) white paper strips (d) soap solution
36. 36.🔍 Which is the odd one out? (a) baking soda water (b) vinegar (c) plain water (d) tamarind water
37. 37.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the amount of sugar (b) size of the balloon (c) the amount of yeast (d) the same bottles
38. 38.🧺 Which of these is not needed for growing salt crystals? (a) a piece of string (b) a spoon (c) turmeric powder (d) salt
39. 39.🔮 Predict: the jar is filled right to the top with cream. What happens? (a) it makes salt (b) it takes much longer (c) it is much faster (d) it turns pink
40. 40.🔍 Which is the odd one out? (a) baking soda water (b) soap solution (c) sugar water (d) detergent water

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