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Chemistry 1 Question Game,

I'm really struggling with revising for Chemistry as I have done everything possible and before the B1 exam alot of people were playing this game but for Biology.

If you don't know how to play it's basically I'll ask a question and someone replies with the answer to my question and then that persons asks a different questions (related to chemistry obviously.)

first question - explain how earthquakes and volcanoes happen?

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Original post by fauziaa
I'm really struggling with revising for Chemistry as I have done everything possible and before the B1 exam alot of people were playing this game but for Biology.

If you don't know how to play it's basically I'll ask a question and someone replies with the answer to my question and then that persons asks a different questions (related to chemistry obviously.)

first question - explain how earthquakes and volcanoes happen?


The tectonic plates in the earths crust move a few cm a year because of convection currents in the mantle due to radio active decay processes in the core releasing heat.


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Reply 2
Avatar for plex-
plex-
8
Name some differences between alkanes and alkenes
alkanes are saturated with hydrogen where as alkenes are not. Alkanes are also better fuels
Reply 4
Avatar for fauziaa
fauziaa
OP
11
Original post by plex-
Name some differences between alkanes and alkenes

Alkanes are saturated, no double bond and have a general formula of CnH2n+2 whereas Alkenes are unsaturated, have double bonds and general formula of CnH2n

Describe Milley-Urey's experiment.
Original post by plex-
Name some differences between alkanes and alkenes



Alkenes have a double bond with a formula C(n)H(2n)
Alkane formula is C(n)H(2n+2)

What are the conditions needed for hydrogenation of unsaturated oils?
Reply 6
Avatar for Andy-22
Andy-22
2
Original post by Jess Shallcross
Alkenes have a double bond with a formula C(n)H(2n)
Alkane formula is C(n)H(2n+2)

What are the conditions needed for hydrogenation of unsaturated oils?



You need to react hydrogen in the presence of a nickel catalyst at 60 degrees centigrade heat

Pros and cons of using an emulsifier?
(edited 7 years ago)
Reply 7
Avatar for fauziaa
fauziaa
OP
11
Original post by Jess Shallcross
Alkenes have a double bond with a formula C(n)H(2n)
Alkane formula is C(n)H(2n+2)

What are the conditions needed for hydrogenation of unsaturated oils?

Hydrogen Gas, Nickel Catalyst and 60 degrees Celsius I think..

Advantages and Disadvantages of Quarrying?
Original post by Jess Shallcross
Alkenes have a double bond with a formula C(n)H(2n)
Alkane formula is C(n)H(2n+2)

What are the conditions needed for hydrogenation of unsaturated oils?


Well:
Hydrogen
A catalyst (Nickel)
60-150C temperature
Original post by fauziaa
Alkanes are saturated, no double bond and have a general formula of CnH2n+2 whereas Alkenes are unsaturated, have double bonds and general formula of CnH2n

Describe Milley-Urey's experiment.


They used methane, water, hydrogen and ammonia (gases thought to be in the early atmosphere) and passed an electric shock through them. This formed 11 amino acids which supports the theory of 'primordial soup'

What two ways can ethanol be produced?
Original post by fauziaa
Hydrogen Gas, Nickel Catalyst and 60 degrees Celsius I think..

Advantages and Disadvantages of Quarrying?


Advantages:
Increased trade
Increased job opportunities
Better roads(????)
Disadvantages
Visual pollution
Noise pollution
Destroys habitats/environment



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Original post by Jess Shallcross
Alkenes have a double bond with a formula C(n)H(2n)
Alkane formula is C(n)H(2n+2)

What are the conditions needed for hydrogenation of unsaturated oils?


nickel catalyst at 60 degrees ( celcius)
Original post by fauziaa
Hydrogen Gas, Nickel Catalyst and 60 degrees Celsius I think..

Advantages and Disadvantages of Quarrying?


Gonna put 3 for each, just in case its a 6 Marker.
Advantages:
-Creates Jobs
-We get limestone or whatever is being quarried.
-One more cant think of any...

Disadvantages:
-Scars the landscape
-Greenhouse gasses (CO2, SO2...)
-Destroys habitats
Original post by plex-
Name some differences between alkanes and alkenes


Alkenes are unsaturated, contain a double bond, are much more useful than alkanes, and can have a bond angle of 120'. Alkanes are saturated, only contain double bonds, are less useful and have a bond angle of 109.5' exclusively. Both of them catenate and are hydrocarbons.
Original post by fauziaa
Hydrogen Gas, Nickel Catalyst and 60 degrees Celsius I think..

Advantages and Disadvantages of Quarrying?


Adv: creates jobs, stimulates local economy
Dis adv: dust, noise pollution (from explosions, drilling), increased traffic, unsightly, upsets local ecosystem

QUESTION: explain the properties of different irons and steels.
Outline the process of Fractional Distillation. (Possible 6 Marker)(Quarrying advantages disadvantages is the other one.)
Reply 16
Avatar for fauziaa
fauziaa
OP
11
Original post by Jess Shallcross
They used methane, water, hydrogen and ammonia (gases thought to be in the early atmosphere) and passed an electric shock through them. This formed 11 amino acids which supports the theory of 'primordial soup'

What two ways can ethanol be produced?

Fermentation and Hydration.

What happens when you heat Calcium Carbonate?
Original post by Jess Shallcross
They used methane, water, hydrogen and ammonia (gases thought to be in the early atmosphere) and passed an electric shock through them. This formed 11 amino acids which supports the theory of 'primordial soup'

What two ways can ethanol be produced?


Fermentation and hydration of Ethene


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Reply 18
Avatar for meero
meero
using fermentation or addition of water to alkenes
name all the conditions in the syllabus (I man tempratures pressures catalysts etc.)
Original post by fauziaa
Fermentation and Hydration.

What happens when you heat Calcium Carbonate?


It decomposes to calcium oxide and gives off co2


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