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Pros & cons of quarrying (6 marks)

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Pros:
- Provides jobs for locals
- It is unsightly to most people.
- Valuable source of material

Cons of Quarrying
- Creates a lot of pollution
- Transporting limestone and equipment can cause traffic.
- Destroys natural habitats.

Question - A compound created by the reaction of a non metal and a metal consists of what type of particle. (1 Mark)

Reply 101

Jazzgabrie

1

Describe why we do not know how life was first formed?

URGENT- DONT KNOW THE ANSWER IS ON THE SPEC

Reply 102

JakeAntonyBrown

6

Original post by Jazzgabrie

Describe why we do not know how life was first formed?

URGENT- DONT KNOW THE ANSWER IS ON THE SPEC

Very long time ago.
No one was there.
Ethical theory, e.g. about God...

Reply 103

dhruvap

11

Original post by Jazzgabrie

Describe why we do not know how life was first formed?

URGENT- DONT KNOW THE ANSWER IS ON THE SPEC

Common sense, we have insufficient evidence as rock has changed the fossils due to geographical changes. Also fossil records are incomplete. There are many theories, however we cannot do any experiment to prove (Closest was miller-urey experiment).

Reply 104

lilacpotato

12

Original post by WillsWheels

Pros:
- Provides jobs for locals
- It is unsightly to most people.
- Valuable source of material

Cons of Quarrying
- Creates a lot of pollution
- Transporting limestone and equipment can cause traffic.
- Destroys natural habitats.

Question - A compound created by the reaction of a non metal and a metal consists of what type of particle. (1 Mark)

An ion?

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Reply 105

TheConfusedMedic

21

Original post by WillsWheels

Pros:
- Provides jobs for locals
- It is unsightly to most people.
- Valuable source of material

Cons of Quarrying
- Creates a lot of pollution
- Transporting limestone and equipment can cause traffic.
- Destroys natural habitats.

Question - A compound created by the reaction of a non metal and a metal consists of what type of particle. (1 Mark)

ions?

Question: describe what is meant by the term 'primordial soup'.

Reply 106

WillsWheels

2

Original post by lilacpotato

An ion?

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Ions - Une Poi

Reply 107

WillsWheels

2

Original post by surina16

ions?

Question: describe what is meant by the term 'primordial soup'.

The theory which states that life started in a ocean which contained the correct chemicals from the atmosphere to create an amino acid. Cough ~ Cough Biology AQA

Why is Cast Iron unsuitable for the manufacture of pylons?

Reply 108

4dam

5

Original post by WillsWheels

Why is Cast Iron unsuitable for the manufacture of pylons?

It is hard but too brittle therefore risks snapping etc. if put under too much strain

Reply 109

4dam

5

Original post by Jazzgabrie

Describe why we do not know how life was first formed?

URGENT- DONT KNOW THE ANSWER IS ON THE SPEC

There is not enough evidence to provide any definitive answers. (Can say nobody was there but sometimes that is rejected)

Reply 110

jackbarry1999

2

fossils from opposing continents were the same, so were the rock types also they looked like they fit together

Reply 111

WillsWheels

2

State the conditions needed for olive oil to be hardened. What does it have to react with?

Reply 112

imightplay12

4

Original post by j3ss1cah

What evidence did Wegener find to support his idea of continental drift?

Mantle dynamics?

Explain steps of fractional distillation (6 marks)

Reply 113

lilacpotato

12

Original post by WillsWheels

State the conditions needed for olive oil to be hardened. What does it have to react with?

React with hydrogen
60 degrees C
Nickel catalyst

Question: Why is carbon dioxide removed before air is cooled to -200 degrees C?
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(edited 7 years ago)

Reply 114

username1986099

18

What chemicals did the Neanderthals use to kill the drunken rats that they sometimes got stuck in their teeth after eating?

(This is a mix of AQA and OCR)

Reply 115

WillsWheels

2

Original post by lilacpotato

React with hydrogen
60 degrees C
Nickel catalyst

Question: Why is carbon dioxide removed before air is cooled to -200 degrees C?
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Because it is already a solid

Reply 116

username1986099

18

Okay, so I know this is not on the spec BUT it comes under alcohol because you know Henry the 8th might have had some form of alcohol during his life.

Name Henry V111's six wives

Reply 117

estherosewa

Original post by z_o_e

Lets ask questions.

What are hydrocarbons?

A mixture of hydrogen and carbon only.

Reply 118

WillsWheels

2

Describe a test which would indicate the presence of ethene.
What would the result of this test be?

Reply 119

PopsIndigo

3

Original post by WillsWheels

Describe a test which would indicate the presence of ethene.
What would the result of this test be?

You mean bromine water?

If bromine water is added to Ethene (an unsaturated hydrocarbon) it will react and become colourless.

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