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Chemistry for a Cleaner Environment
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Chemistry for a Cleaner Environment

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Questions and Answers

Which gases are responsible for the greenhouse effect?

  • Carbon dioxide and nitrogen oxide
  • Oxygen and nitrogen
  • Carbon dioxide and chlorofluorocarbons (correct)
  • Carbon dioxide and chlorine

    • What is the role of the ozone layer?

  • To trap solar energy
  • To emit radioactive substances
  • To cause air, water, and soil pollution
  • To protect living beings from harmful radiation (correct)

    • How can chemistry be used to clean up ecosystems?

  • By disposing of substances in an irresponsible manner
  • By manufacturing more plastic containers
  • By using harmful substances in products
  • By developing methods to mitigate environmental damage (correct)

    • Which type of pollution is caused by nuclear energy production plants?

    <p>Water pollution</p> Signup and view all the answers

    When did scientists Paul J. Crutzen, Mario J. Molina, and F. Sherwood Rowland win the Nobel Prize?

    <p>1995</p> Signup and view all the answers

    What are the three main effects mentioned in the text?

    <p>Health, environment, and technology</p> Signup and view all the answers

    What is the main reason for the harmful effects on health and the environment?

    <p>Burning fuels</p> Signup and view all the answers

    What is the role of the ozone layer?

    <p>To protect the Earth from harmful UV radiation</p> Signup and view all the answers

    Which of the following compounds is NOT mentioned as a harmful emission caused by burning fuels?

    <p>Ozone (O3)</p> Signup and view all the answers

    What is the main cause of the accumulation of toxic gases in the atmosphere?

    <p>The greenhouse effect</p> Signup and view all the answers

    What are some of the health effects mentioned in the text that can be caused by toxic gas particles?

    <p>Eye irritation</p> Signup and view all the answers

    Which technology is mentioned in the text as a way to reduce the negative effects of polluting emissions?

    <p>Catalytic converter</p> Signup and view all the answers

    What is the harmful compound formed when excess heat builds up in catalytic converters?

    <p>Nitrogen oxide (NOx)</p> Signup and view all the answers

    Which of the following materials is encouraged to be reduced due to its nonrecyclable nature?

    <p>Polystyrene</p> Signup and view all the answers

    What chemical processes are used for water purification?

    <p>Adding chlorine and iodine</p> Signup and view all the answers

    Which elements help plants to grow and the soil to vary in nutrients?

    <p>Nitrogen and phosphorus</p> Signup and view all the answers

    What is the process of recycling nutrients in the atmosphere called?

    <p>Composting</p> Signup and view all the answers

    What are fertilizers made of?

    <p>Organic nutrients</p> Signup and view all the answers

    Which region is currently experiencing rainfall?

    <p>Southwestern regions</p> Signup and view all the answers

    How many people are still missing after the torrential rain?

    <p>3</p> Signup and view all the answers

    When did this year's Monsoon period start?

    <p>June 25th</p> Signup and view all the answers

    Which region has been experiencing extremely high temperatures and battling wildfires?

    <p>Greece</p> Signup and view all the answers

    What is the highest temperature recorded in Greece during the heatwave?

    <p>45 Celsius</p> Signup and view all the answers

    Which country in the northern hemisphere has been struggling with high temperatures?

    <p>United States</p> Signup and view all the answers

    How many people have died in recent flooding in South Korea?

    <p>47</p> Signup and view all the answers

    What are scientists concerned about regarding the recent climate records?

    <p>The speed and timing of the records</p> Signup and view all the answers

    What is mentioned as an unexpected climate record being broken?

    <p>Marine heat waves in the North Atlantic</p> Signup and view all the answers

    What is the significance of the global average temperature breaking through 17 degrees in July?

    <p>It happened for the first time in history</p> Signup and view all the answers

    Which region has been experiencing the longest heatwave in its history?

    <p>Greece</p> Signup and view all the answers

    What is the main cause of the planet warming, according to the text?

    <p>Greenhouse gases</p> Signup and view all the answers

    What is the current state of sea ice in the Antarctic, compared to usual?

    <p>Lower than usual</p> Signup and view all the answers

    Which regions have recently experienced heat waves according to the text?

    <p>Europe, United States, and parts of Asia</p> Signup and view all the answers

    What is the concern of leading scientists regarding the recent climate records?

    <p>The speed and timing of the records are unprecedented</p> Signup and view all the answers

    What is the significance of the global average temperature breaking through 17 degrees in July?

    <p>It is a new record for the hottest day on Earth</p> Signup and view all the answers

    Which region in South Korea is currently experiencing rainfall?

    <p>Southwestern regions</p> Signup and view all the answers

    How many people have died in the recent flooding in South Korea?

    <p>13</p> Signup and view all the answers

    When did this year's Monsoon period start?

    <p>June 25th</p> Signup and view all the answers

    What is the average precipitation recorded within the same time period this year?

    <p>591.1 millimeters</p> Signup and view all the answers

    What are greenhouse gases and how do they contribute to the greenhouse effect?

    <p>Greenhouse gases are gases that trap heat in the Earth's atmosphere. They contribute to the greenhouse effect by absorbing and re-emitting infrared radiation, which warms the Earth's surface.</p> Signup and view all the answers

    What is the ozone layer and what is its role in protecting the Earth?

    <p>The ozone layer is a region of ozone gas in the stratosphere. Its role is to protect the Earth by absorbing and blocking harmful ultraviolet (UV) radiation from the sun.</p> Signup and view all the answers

    What is the function of a catalytic converter and how does it help reduce pollution from vehicle emissions?

    <p>A catalytic converter is an exhaust emission control device in vehicles. It helps reduce pollution by catalyzing a reaction that converts toxic gases and pollutants in exhaust gas into less harmful pollutants.</p> Signup and view all the answers

    Chemistry is involved in which of the following areas?

    <p>Technology</p> Signup and view all the answers

    What is the range of reactions that chemistry studies?

    <p>Small to gigantic reactions</p> Signup and view all the answers

    What is the main focus of chemistry?

    <p>The composition of everything around us</p> Signup and view all the answers

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