The Earth - Chemistry

Created by

violestial

Cards (18)

Atmosphere
The air around us all of the time, made up of a mixture of gases
Heating of Earth's surface by the Sun
1. Some radiation is absorbed
2. Some radiation is reflected back into space
Greenhouse gases
Gases in the atmosphere that absorb and trap radiation, keeping the Earth warmer
Commonly known greenhouse gases
Carbon dioxide
Methane
Global warming
The gradual increase in temperature of the Earth
Recycling
The collecting and processing of materials that have been used so that the resources can be used again
Advantages of recycling
Resources will last longer
Uses less energy than extracting new materials
Reduces waste and pollution
Disadvantages of recycling
Separating rubbish can be seen as a nuisance
Lorries collecting recycling produce pollution
Some materials are easier to recycle than others
Climate change
Long term changes to weather patterns
Climate change
Can cause ice caps to melt, leading to sea levels rising and flooding of low level land
Ways to prevent climate change
Using renewable energy resources
Using cars less
Buying and wasting less resources
Carbon cycle
The processes by which carbon is naturally transferred to different stores through a range of natural processes
Carbon cycle
1. Carbon is released into the atmosphere through combustion of fossil fuels, and animal respiration
2. Carbon is reabsorbed by plants during photosynthesis
Mineral
Naturally occurring metals and their compounds
Ore
A naturally occurring rock which contains enough of a mineral to be worth extracting
Extracting metals
1. Separate metal from other minerals in the ore
2. Undergo a chemical reaction to separate from the other element in the compound
Extracting metals below carbon in reactivity series
React with carbon in a displacement reaction, where carbon takes the place of the metal
Extracting metals above carbon in reactivity series
Use electrolysis to separate the metal by using electricity