Kitchen Chemistry Experiments Test Worksheet

Science experiments lesson 20: Part 2 test: kitchen chemistry and life · Set 678 · 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: turmeric powder is not needed for the turmeric test. (a) True (b) False
2. 2.⚖️ 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 amount of water (d) the kind of salt
3. 3.📘 What do we call a solution that cannot dissolve any more salt? (a) magnetic (b) saturated (c) frozen (d) empty
4. 4.True or false: water is needed for sprouting seeds. (a) True (b) False
5. 5.True or false: warm water is something yeast needs. (a) False (b) True
6. 6.🔮 Predict: you shake skimmed milk (with almost no cream) instead. What happens? (a) no butter forms (b) it turns to cheese (c) it turns blue (d) more butter forms
7. 7.🧺 Which of these is needed for the turmeric test? (a) soap solution (b) a mirror (c) a magnet (d) a balloon
8. 8.🔍 Which is the odd one out? (a) sugar water (b) salt water (c) plain water (d) tamarind water
9. 9.🔮 Predict: you write with plain water instead of lemon juice. What appears after ironing? (a) dark brown words (b) blue words (c) a rainbow (d) almost nothing
10. 10.🧺 Do we need a battery cell for the turmeric test? (a) needed (b) not needed
11. 11.🍋 Secret message: who does this step — putting the iron away? (a) a child can do it (b) an adult does it
12. 12.🧺 Which of these is needed for the leafy bag test? (a) a clear plastic bag (b) a mirror (c) yeast (d) vinegar
13. 13.True or false: a mirror is not needed for the muddy water filter. (a) False (b) True
14. 14.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? True or false: the light we look in is the one thing we change. (a) True (b) False
15. 15.True or false: a bowl is needed for making butter. (a) True (b) False
16. 16.⚖️ Fair test — does more baking soda blow the balloon up bigger? Which of these is kept the same? (a) the amount of vinegar (b) size of the balloon (c) spoons of baking soda
17. 17.⚖️ 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) the time we wait (b) the same kind of bag (c) amount of water drops (d) the size of the plant
18. 18.⚖️ 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) sun or shade (b) amount of water drops (c) the kind of plant (d) the same kind of bag
19. 19.🧺 Three of these are needed for growing salt crystals. Which one is NOT needed? (a) a spoon (b) a magnet (c) warm water (d) a piece of string
20. 20.🔮 Predict: tea is poured through a strainer. What happens to the tea leaves? (a) tea stays behind (b) leaves pass through (c) leaves stay behind (d) both stay behind
21. 21.🌱 Is warmth needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
22. 22.⚖️ Fair test — does a plant in the sun give out more water than one in the shade? True or false: amount of water drops is the one thing we change. (a) True (b) False
23. 23.🧂 Does food colour dissolve in water? (a) dissolves in water (b) does not dissolve
24. 24.🔮 Predict: you tie a bag on a branch with no leaves. Will it collect much water? (a) exactly the same (b) much more water (c) much less water (d) it fills with soil
25. 25.🧺 Do we need baking soda for the fizzy balloon? (a) not needed (b) needed
26. 26.🌱 Is water needed for a seed to sprout? (a) needed to sprout (b) not needed to sprout
27. 27.⚖️ Fair test — do seeds need water to sprout? Which of these is the one thing we change? (a) the same place (b) the kind of seeds (c) wet or dry cotton (d) the same bowls
28. 28.True or false: milk turning to curd is a change that can be undone. (a) False (b) True
29. 29.True or false: freezing water is a change that can be undone. (a) True (b) False
30. 30.True or false: white paper strips is not needed for the turmeric test. (a) False (b) True
31. 31.🔮 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
32. 32.🧺 Which of these is needed for the muddy water filter? (a) yeast (b) sand and pebbles (c) a mirror (d) a battery cell
33. 33.True or false: a balloon is not needed for the muddy water filter. (a) True (b) False
34. 34.🛟 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
35. 35.🫧 Is salt water an acid, a base or neutral? (a) an acid (b) neutral (c) a base
36. 36.🧂 What shape are table salt crystals under a magnifying glass? (a) tiny cubes (b) tiny stars (c) tiny spheres (d) tiny triangles
37. 37.⚖️ Fair test — does cold cream turn into butter faster than warm cream? Which of these is what we measure? (a) how hard we shake (b) the amount of cream (c) time to make butter (d) the cream temperature
38. 38.📘 What do we call something that changes colour to show an acid or a base? (a) a pulley (b) a prism (c) an indicator (d) a magnet
39. 39.⚖️ Fair test — which liquids turn turmeric paper reddish-brown? What do we do with “the liquid we test”? (a) we measure it (b) we keep it the same (c) we change it
40. 40.🍋 Which of these steps is a job for an adult? (a) plugging in the iron (b) reading the message (c) writing the message (d) letting the paper dry

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