Group 7(Ways to reduce methane, ozone and unburnt hydrocarbons in the environment) by Yee Jian, Yan Chong, Ya Ning, Ming Chung

Here's our video :

And here's our question ---
1) If cars were not invented, will there be less methane in the environment? Explain why?
2) What are the effects of  absence of ozone on the Earth?

And finally here's the Bonus Question!!

1) Explain the relationship between fast food chain stores and dinosaurs with regarding to this chapter.

Group 2 Oxides of nitrogen

Here is our youtube video!

And our open-ended question is:

What are the common sources of nitrogen oxides and

What are the negative effects of nitrogen oxides to the environment?

By Rongxing, Yukai, Matthew and Xiaozhi

Group 5 Ozone and CFCs

This is the link to our video:
http://www.youtube.com/watch?v=o_vGstgQT4c

Question:
1.Discuss why is Ozone important in the Stratosphere layer.
2.Explain why people living in Australia have a higher chance of getting skin cancer.

By: Htoo(8),Qianhong(17),Jieling(18),Wang Yu(23)

Group 8 open ended question (':

1) Give one word equation on how carbon dioxide is added to the atmosphere.
2) Explain why the increase in concentration of carbon dioxide is a major environmental concern.
3) Explain why methane is a greenhouse gas of greater impact than carbon dioxide.

Group 6: Reduce Sulfur Dioxide, Oxides of Nitrogen and Carbon Monoxide Emission in the Environment

Here's the link to our video http://www.youtube.com/watch?v=5v3FixwnE-0  :)

Our question to you!
What are more ways of reducing these gases in our daily lives?

Group member: Jessica, Jie Ying, Tania, Shi Qi

Chemistry- Global warming and Carbon Cycle

Heres Group 8 Video on Global warming and Carbon Cycle

Group 1: Sources and Effect of Sulfur Dioxide

What is Sulfur dioxide?

• A colourless, pungent gas
• Harmful pollutant (top 6 air pollutants)
• chemical formula of SO2

Representation of a sulfur dioxide molecule
credits: earthtimes.org

Sources of sulfur dioxide

•  Natural

1. Release from oceans
2. forest fires
3. biological decay
4. Volcanic activity 

• Industrial 

1. Emissions from industrial facilities 
2. fossil fuel combustion
3. Generating electricity supply

Chart of the main contributions towards emissions of sulfur dioxide
credits: www.environment.gov.au

Effects of sulfur dioxide

• reacts with water vapour or other chemicals in the atmosphere to form sulfur based particles which reflect the sun's rays and cools the earth for periods of time (not necessarily a positive effect)
• sulfur dioxide forms haze which reduces visibility
• irritates eyes and cause breathing difficulties as it irritates lungs too
• Forms into acid rain (rain with pH value of 4 or less)

1. dissolves in rainwater to form sulfurous acid                                                                          (SO2 (g) +H2O (l)---> H2SO3 (aq) )
2. sulfurous acid is oxidised in air to form sulfuric acid                                                                   (2 H2SO3 (aq)+ O2 (g) ---> 2 H2SO4 (aq) )
3. Acid rain leaches important nutrients from soil and destroys plants
4. reduce pH value of natural water bodies and kill aquatic life 
5. reacts with metals and carbonates, thus corroding and destroying monuments, statues, buildings and bridges

Haze in Kuala Lumpur
source: en.wikipedia.org

How acid rain is formed
source: ecopolproject.blogspot.com

Graphic illustration of acid rain
source: initzs.deviantart.com

Link to youtube video:

Watch our short youtube video to find out more! :) Group 1's youtube video :-)

Hopefully you enjoyed the video and learnt valuable knowledge from the short 2 min video!

Sources for info: 

- Chemistry matters 'O' Level textbook by Marshall Cavendish

- http://www.epa.gov/airquality/sulfurdioxide/

- http://en.wikipedia.org/wiki/Sulfur_dioxide

Open ended question: 

Now that you know about the effects of sulfur dioxide on the environment, how is sulfur dioxide used in our daily lives and how does it affect us be it positively or negatively?