Chemistry Paper 2: The Atmosphere

The current atmosphere is made up of around 78% ​ (a)   and 21% ​ (b)   . The remaining 1% is mostly ​ (c)   with only 0.04% being ​ (d)   .

• nitrogen
• oxygen
• argon
• carbon dioxide
• water
• carbon monoxide
• methane

Reorder the following

• Water vapour condensed to form the oceans

• Volcanic eruptions released ammonia, carbon dioxide and water vapour

• Ammonia was broken down onto nitrogen and more nitrogen released over time

• Carbon dioxide dissolved into the oceans and reacted to form carbonates

• Bacteria and plants evolved carrying out photosynthesis reducing carbon dioxide levels and increasing oxygen

Tags

NGSS.MS-ESS2-1

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Match the following statements about the changes in the Earth's Atmosphere

• Condensed to form oceans

• Water Vapour Reduced

• Produced from photosynthesis

• Oxygen Increased

• Volcanic eruptions

• Ammonia broken down and nitrogen released from volcanoes

• Carbon dioxide reduced

• Dissolved into oceans and used in photosynthesis

• Nitrogen levels increased

• The first atmosphere

Which planet was Earth's early atmosphere most similar to?

• Mercury

• Venus

• Jupiter

• Uranus

• Pluto

How long ago did the Earth form?

• 4600 years ago

• 4.6 million years ago

• 4.6 billion years ago

• 4.6 trillion years ago

Tags

NGSS.MS-ESS1-4

Why can scientists not be certain about the current theories of the development of the Earth's Atmosphere?

(select 2 answers)

• There is little direct evidence

• Dinosaurs were the only witnesses

• It was a long time ago so no one has observed the changes

• There is too much gas in the atmosphere to measure

• It is too expensive to test

Complete the equation for photosynthesis

Water + ​ (a)   --> Oxygen + ​ (b)  

• Carbon dioxide
• Glucose
• Carbon monoxide
• Ammonia

Tags

NGSS.MS-LS1-6

NGSS.MS-LS2-3

Match the following

• Emitted by Earth

• Short-wavelength Radiation

• Farming practices (cattle and crops)

• Increasing methane

• Combustion of fossil fuels

• Absorbed by greenhouse Gases

• Long-Wavelength Radiation

• Long-Wavelength Radiation

• Absorbed by the Earth

• Increasing carbon dioxide

Tags

NGSS.MS-ESS3-5

Organize these options into the right categories

Groups:

(a) Effects of Global Warming

,

(b) Methods of Reducing Carbon Footprints

• Use of Biofuels

• Consuming Local Produce

• Improved Engine Efficiency

• More Extreme Weather Events

• Some Diseases More Likely to Spread

• Raising Sea Levels

• Extinction of Species

Tags

NGSS.MS-ESS3-4

NGSS.MS-ESS3-5

NGSS.MS-LS2-4

Match the following

• Combustion of coal

• Gases in Air reacting during combustion

• Incomplete Combustion

• Sulfur Dioxide

• Unburnt Fuel

• Particulates

• Nitrogen Oxides

• Carbon Monoxide

Tags

NGSS.MS-PS1-2