Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 681 · 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.🧺 Three of these are needed for the muddy water filter. Which one is NOT needed? (a) muddy water (b) a balloon (c) sand and pebbles (d) cotton or cloth
2. 2.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the liquid we test is kept the same. (a) False (b) True
3. 3.⚖️ Fair test — does more baking soda blow the balloon up bigger? What do we do with “spoons of baking soda”? (a) we measure it (b) we keep it the same (c) we change it
4. 4.🍋 Secret message: who does this step — plugging in the iron? (a) a child can do it (b) an adult does it
5. 5.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is what we measure? (a) the amount of vinegar (b) size of the balloon (c) the kind of balloon (d) the same bottle
6. 6.🫗 Muddy water is poured through a cloth filter. What stays on the cloth? (a) the water (b) nothing (c) the mud (d) the salt
7. 7.🧺 Which of these is not needed for making butter? (a) fresh cream (b) cold water to rinse (c) a bowl (d) a magnet
8. 8.True or false: a funnel or spoon is needed for the fizzy balloon. (a) True (b) False
9. 9.🫗 Is filtered pond water safe to drink? (a) yes, if it is clear (b) yes, always (c) no, germs may stay (d) yes, if it is cold
10. 10.🧺 Do we need a dropper or spoon for the turmeric test? (a) needed (b) not needed
11. 11.🧈 Can this change be undone: melting butter? (a) cannot be undone (b) can be undone
12. 12.🔍 Which is the odd one out? (a) sunlight (b) salt (c) air (d) soil
13. 13.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a piece of string (b) a balloon (c) a shallow dish (d) warm water
14. 14.🧂 Which of these dissolves in water? (a) food colour (b) cooking oil (c) small pebbles (d) sawdust
15. 15.🪴 Where did the water inside the bag come from? (a) the plastic (b) the rain (c) the leaves (d) the rubber band
16. 16.🔍 Which is the odd one out? (a) sugar water (b) baking soda water (c) soap solution (d) detergent water
17. 17.True or false: a few days is needed for sprouting seeds. (a) True (b) False
18. 18.🧂 Which of these dissolves in water? (a) sand (b) small pebbles (c) cooking oil (d) baking soda
19. 19.⚖️ 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 same kind of bag (b) the kind of plant (c) sun or shade (d) amount of water drops
20. 20.⚖️ Fair test — do seeds need water to sprout? What do we do with “the kind of seeds”? (a) we keep it the same (b) we change it (c) we measure it
21. 21.🧺 Do we need a magnet for growing salt crystals? (a) needed (b) not needed
22. 22.🧺 Three of these are needed for the yeast balloon. Which one is NOT needed? (a) dry yeast (b) turmeric powder (c) a small bottle (d) sugar
23. 23.🫧 Which of these is neutral? (a) soap solution (b) tamarind water (c) orange juice (d) sugar water
24. 24.🧈 Before the butter appears, what does the cream turn into? (a) powder (b) clear water (c) ice (d) thick whipped cream
25. 25.True or false: folding paper is a change that can be undone. (a) True (b) False
26. 26.True or false: a mirror is needed for the secret lemon message. (a) False (b) True
27. 27.🧺 Three of these are needed for the leafy bag test. Which one is NOT needed? (a) a few hours (b) a potted plant (c) a clear plastic bag (d) vinegar
28. 28.⚖️ Fair test — does yeast blow up the balloon more with warm water or cold water? Which of these is what we measure? (a) the same bottles (b) the amount of yeast (c) the amount of sugar (d) size of the balloon
29. 29.True or false: take in water from soil is a job of the stem. (a) False (b) True
30. 30.⚖️ Fair test — do salt crystals form faster on a sunny windowsill or in a shady cupboard? What do we do with “sunny or shady place”? (a) we measure it (b) we change it (c) we keep it the same
31. 31.🧺 Do we need a battery cell for making butter? (a) needed (b) not needed
32. 32.🪴 Which of these is a job of the stem? (a) give out water vapour (b) make food in sunlight (c) take in water from soil (d) hold up the leaves
33. 33.🌱 Will these sprout: seeds on wet cotton? (a) does not sprout (b) sprouts
34. 34.🧺 Three of these are needed for making butter. Which one is NOT needed? (a) a timer (b) a magnet (c) a jar with a tight lid (d) cold water to rinse
35. 35.🧺 Which of these is needed for the leafy bag test? (a) a magnet (b) a few hours (c) a battery cell (d) turmeric powder
36. 36.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) leaves pass through (b) tea stays behind (c) both stay behind (d) leaves stay behind
37. 37.🫗 Which of these is done by sieving? (a) gravel from fine sand (b) tea leaves from tea (c) chaff from wheat grain (d) husk from rice grain
38. 38.🟡 Turmeric paper meets sugar water. What happens? (a) stays yellow (b) turns reddish-brown
39. 39.🧂 Why do we stir in salt until no more will dissolve? (a) to cool the water (b) to make it fizz (c) to make it very salty (d) to change its colour
40. 40.🛟 Who should pour the warm water for the crystal experiment? (a) nobody needs to (b) a friend who is running (c) a grown-up (d) the youngest child

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