Predictions for Chemistry 2014 HSC? (1 Viewer)

[faisalabdul16]

Tbh, no one else is gonna help lolol

Haber's discovery was significant and important at the time as it established a clear and industrial method of forming ammonia, rather than having to rely on guano extracts (bird droppings) from Chile. When Germany wanted to engage in war, the allies of Chile, being the British, cut off the guano supply to Germany, preventing them from producing ammonia to be used as explosives. Germany was desperate and therefore prompted scientists to industrially produce ammonia. Fritz Haber produced ammonia after countless experiments of changing and appropriating conditions and catalysts which was significant at the time as it not only allowed Germany to continue its war efforts, but prevent the country from dying from starvation as ammonia is used as fertilizer to grow crops. Without ammonia, crops would not adequately grow and produce sustainable food yield, leaving a nation in starvation.
Carl Bosch, was the man who produced ammonia on an industrial scale.

Ironically, Haber himself was a Jew. He killed himself.

Do you think Haber's discovery was beneficial or pure evil? <---- Something i pulled out of my a**

 

[Queenroot]

Haber dun goofed

Anyway nek question

What is an electrode

 

[faisalabdul16]

Haber dun goofed

Anyway nek question

What is an electrode

Electrode is a conductor which allows electrons to pass from an external circuit to a half-cell or vice versa

 

[Queenroot]

Electrode is a conductor which allows electrons to pass from an external circuit to a half-cell or vice versa

What is a biopolymer

 

[faisalabdul16]

Talk about biopolymers.

A biopolymer is a naturally occurring polymer generated by natural resources like plants and microorganisms.
Biopol is made by feeding the bacteria alcaligenus eutrophus on a nutrient rich diet of glucose until large colonies form. Glucose is then withdrawn from their diet and the bacteria will automatically produce the biopol as granules in its cell wall and store energy similar to the fat of humans.
The advantages of biopol include that it is biodegradable, degrading to carbon dioxide and water. Also, biopol is stable when stored in humid conditions.
The disadvantage associated with biopol is that it is too costly to produce.

Uses -
Biopol is used in the medical field due to its bicompatibility and fewer allergic reactions in people. Biopol is partically used in the medical field as sutures.
Biopol is also used in plastic plates and shampoo bottles.

Biopol can potentially be used to produce artificial skin and organ implants, thus more research should be enforced due to the advantages associated with this product.

 

[photastic]

A biopolymer is a naturally occurring polymer generated by natural resources like plants and microorganisms.
Biopol is made by feeding the bacteria alcaligenus eutrophus on a nutrient rich diet of glucose until large colonies form. Glucose is then withdrawn from their diet and the bacteria will automatically produce the biopol as granules in its cell wall and store energy similar to the fat of humans.
The advantages of biopol include that it is biodegradable, degrading to carbon dioxide and water. Also, biopol is stable when stored in humid conditions.
The disadvantage associated with biopol is that it is too costly to produce.

Uses -
Biopol is used in the medical field due to its bicompatibility and fewer allergic reactions in people. Biopol is partically used in the medical field as sutures.
Biopol is also used in plastic plates and shampoo bottles.

Biopol can potentially be used to produce artificial skin and organ implants, thus more research should be enforced due to the advantages associated with this product.

Add in how it's currently still economically unfriendly since it requires high level of technician and the yield is not reliable since there is a small percent of actually getting the desired biopolymer.

 

[faisalabdul16]

A biopolymer is a naturally occurring polymer generated by natural resources like plants and microorganisms.
Biopol is made by feeding the bacteria alcaligenus eutrophus on a nutrient rich diet of glucose until large colonies form. Glucose is then withdrawn from their diet and the bacteria will automatically produce the biopol as granules in its cell wall and store energy similar to the fat of humans.
The advantages of biopol include that it is biodegradable, degrading to carbon dioxide and water. Also, biopol is stable when stored in humid conditions.
The disadvantage associated with biopol is that it is too costly to produce.

Uses -
Biopol is used in the medical field due to its bicompatibility and fewer allergic reactions in people. Biopol is partically used in the medical field as sutures.
Biopol is also used in plastic plates and shampoo bottles.

Biopol can potentially be used to produce artificial skin and organ implants, thus more research should be enforced due to the advantages associated with this product.

Add in how it's currently still economically unfriendly since it requires high level of technician and the yield is not reliable since there is a small percent of actually getting the desired biopolymer.

Oh yeah true yield! Forgot, thanks!

Hmmmm why do the products of chemical reactions such as combustion need to be monitored?

 

[faisalabdul16]

Unlikely

They already did one on the need for collaboration and monitoring for electrochemical cells in 2012

I have a feeling theres going to be a lot on galvanic cells

True, but testing knowledge, you never know, might pop up.

 

[Speed6]

There's always question got to so with benzene and ethylene

 

[Speed6]

yeah, because you know all about hsc chem lol

LEL

 

[faisalabdul16]

There's always question got to so with benzene and ethylene

I have a feeling there will be 4 marks on ethylene

 

[Speed6]

I have a feeling there will be 4 marks on ethylene

I've had a couple of looks at different chem papers over the years and saw ethylene here and there so its a common question with a few marks...

 

[Queenroot]

Well the whole first topic is based on it so duh

Benzene tho? Wat

 

[faisalabdul16]

Well the whole first topic is based on it so duh

Benzene tho? Wat

I think his referring to Polysytrene and how you might get asked a question relating its properties to its use.

 

[Speed6]

I think his referring to Polysytrene and how you might get asked a question relating its properties to its use.

Thanks, I just got mixed around

 

[faisalabdul16]

How do vehicles contribute to acid rain?

 

[Speed6]

Q) Which of the following is an important factor in predicting the nuclear stability of an isotope?

a)Atomic radius
b)Nuclear radius
c)The ratio of neutrons to protons
d)The ratio of electrons to protons

 

[Speed6]

Maybe questions about Ammonia?

 

[Queenroot]

I think his referring to Polysytrene and how you might get asked a question relating its properties to its use.

Oh right

What is the monomer of PVC

 

[faisalabdul16]

Q) Which of the following is an important factor in predicting the nuclear stability of an isotope?

a)Atomic radius
b)Nuclear radius
c)The ratio of neutrons to protons
d)The ratio of electrons to protons

C. The ratio of neutrons to protons.

Maybe questions about Ammonia?

Possibly, there is always something to do with ammonia in the paper.

Oh right

What is the monomer of PVC

Common name - vinyl chloride.
Systematic name - chloroethene.