Edexcel (9-1) Topic 8

Which of the following gases was probably a major part of the early atmosphere?

In the modern day atmosphere, oxygen takes up about 21%. What is the approximate percentage of nitrogen? [blank_start]78[blank_end] %

What is the name of the atmospheric process which keeps the Earth warm by absorbing radiation from the Sun?

What is the name of the process which separates crude oil into simpler mixtures of hydrocarbon compounds?

Complete the diagram below

What term could be used to describe a resource which is being made more slowly than it is being used up?

During complete combustion of butane, what are the chemical products? water and [blank_start]carbon dioxide[blank_end]

Sulfur dioxide gas produced by the combustion of fossil fuels is generally responsible for producing [blank_start]acid rain[blank_end]?

When fuels burn they are reacting with the [blank_start]oxygen[blank_end] in the air. If there is an abundance of [blank_start]air[blank_end], then [blank_start]complete combustion[blank_end] will take place. This means [blank_start]carbon dioxide[blank_end] is produced. If they isn't enough air, then [blank_start]incomplete combustion[blank_end] happens and [blank_start]carbon monoxide[blank_end] is made.

Which of the following is not an advantage to hydrogen as a fuel cells (vs petrol/diesel)?

Rising temperatures due to the increase of [blank_start]carbon dioxide[blank_end] and methane in the atmosphere will lead to: ice at the South Pole and in glaciers will melt, causing global sea levels to [blank_start]rise[blank_end] - this will lead to increased, and/or permanent [blank_start]flooding[blank_end] in some areas animals will move away from their 'natural' habitats to find [blank_start]cooler[blank_end] areas to live, and some plants/animals may become [blank_start]extinct[blank_end] if they cannot survive the warmer temperatures weather patterns will begin to change with some areas becoming [blank_start]drier[blank_end], and others much wetter - and even more extreme weather events like more frequent severe [blank_start]storms[blank_end] and heat waves/droughts wildlife, and growth of [blank_start]crops[blank_end], will be affected by the ever-changing weather systems as more carbon dioxide is released, more will [blank_start]dissolve[blank_end] into water systems lowering the [blank_start]pH[blank_end] - more acidic waters can harm the organisms that live in them

The oldest temperature records for central England date back to 1659, but cannot be used to assess global temperature changes as they are only from one place. Temperature records from around the world have only existed from about 1880. These measurements were also not very accurate.

Modelling climate change is easy.