what gases did volcanoes released in the early atmosphere?
78% nitrogen, little oxygen, 0.04 carbon dioxide, 1% of argon, watervapor and other gases
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how did oceans form?
earth cooled down and water vapor condensed into oceasn and seas
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how did sedimentary rock form?
dead organism (calcium carbonate) sunk to the bottom of the ocean and layers and layers formed and high pressure caused it to squash and form sedimentary rock.
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how did igneous rock form?
hot fresh magma (molten rock) which extrusive cooled down outside quicker and formed small crystals (granite), intrusive which cooled down slowly inside which caused big crystal (basalt)
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how was metamorphic formed?
high heat from magma + high pressure from sedimentary = metamorphic rock
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limestone is also know as?
calcium carbonate ( solid)
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if there was a limestone query and you lived near by it, tell me the advantage and disadvantage?
+ its brings money to the economic + more buildings - causes pollution -noisy and dusty
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acids are pH ? - ?
1-4
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alkali are PH ?-?
8-14
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ph is 7 is.....? and what coloure?
neutral/ green
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acid + base =
salt + water
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3 main acids are?
hydrochloric acid + nitirc acid+ sulfuric acid
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hcl + sodiuml hydroxide=
sodium chloride (salt) + water (H20)
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indigestion tablet turns....?
excess acid into water
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metal ore is?
extracting metals
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oxidation and reduction is?
gaining oxygen and losing oxygen
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what metals do we use to electrolysis reactive metals?
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