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C1 chemistry game gcse all exam boards

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Question: how did oxygen appear in the earths early atmosphere?


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How did the Oceans Form? Think about how the early earth was covered in volcanoes
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Original post by WillsWheels
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How did the Oceans Form? Think about how the early earth was covered in volcanoes


Water vapour condensed to form oceans.

What is meant by the primordial soup

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Oxygen appeared when the green plants (mostly in the oceans) photosynthesized
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Original post by WillsWheels
Oxygen appeared when the green plants (mostly in the oceans) photosynthesized


How did the early atmosphere form?

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Can someone please list the experiments that you need to know for C1?

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Original post by z_o_e
Lets ask questions.

What are hydrocarbons?

A mixture of hydrogen and carbon
The Volcanoes through out water vapour into the atmosphere which caused the oceans too form. The oceans absorbed the carbon dioxide which allowed plants in the sea to photosynthesise which added oxygen into the atmosphere. The nitrogen in our atmosphere today was produced from the atmosphere.

What is good about unsaturated fats and why are saturated fats unhealthy.


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Original post by WillsWheels
Great Job!
How did the Oceans Form? Think about how the early earth was covered in volcanoes

water vapour codensed to form ocean
Original post by jaz,
Can someone please list the experiments that you need to know for C1?

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The Miller Urey Experiment is one.
Bromine test is another important one.
They are the most common. Good Luck tommorow


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Original post by PopsIndigo
Question: how did oxygen appear in the earths early atmosphere?


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when the green plants photosynthesise
Original post by z_o_e
How did the early atmosphere form?

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the early atmosphere formed by volcanic activity
Original post by z_o_e
How did the early atmosphere form?

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the atmosphere is formed by volcanoes
Original post by WillsWheels
The Miller Urey Experiment is one.
Bromine test is another important one.
They are the most common. Good Luck tommorow


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what is the miller urey experiment
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Original post by Simra Ali
what is the miller urey experiment


The early atmosphere was rich is methane, ammonia, hydrogen and water vapour .
These gases were collected and put into a flask.
An electric spark was stimulated and caused amino acids to be formed. These are small bits of proteins. These formed life idk how

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Why can scientists not predict earth quakes?

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Original post by Simra Ali
A mixture of hydrogen and carbon


A compound containing only Hydrogen and Carbon atoms
Because we can't predict the movement of the crust and the pressure build up. Off the top of my head, please correct me as I'm not sure


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Original post by z_o_e
Why can scientists not predict earth quakes?

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there generally is no warning signals for earthquakes. Like volcanic eruptions give off smoke etc.
Original post by z_o_e
Why can scientists not predict earth quakes?

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They don't have enough data to make accurate models to make predictions and we don't know what's happening inside the earth.

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