gases in the atmosphere

Cards (26)

  • What is the percentage of nitrogen in air?
    78%
  • What is the percentage of argon in air?
    1%
  • What is the percentage of oxygen in air?
    21%
  • What is the percentage of carbon dioxide in air?
    0.04%
  • What color flame does magnesium oxide produce?
    Bright white flame
  • What color flame does water produce?
    Blue flame
  • What color flame does sulfur dioxide produce?
    Pale blue flame
  • What is thermal decomposition?
    Heating a substance to form simpler substances
  • What is the reaction for thermal decomposition of metal carbonates?
    • Metal carbonate decomposes into:
    • Metal oxide
    • Carbon dioxide
  • How does the atmosphere function in relation to heat energy?
    It acts as an insulating blanket
  • What is the greenhouse effect?
    The warming caused by greenhouse gases
  • What are the main greenhouse gases?
    • Carbon dioxide
    • Methane
    • Water vapor
  • What causes an increase in the greenhouse effect?
    Excessive greenhouse gases in the atmosphere
  • How do farm animals contribute to methane production?
    Through waste decomposition
  • What are the main human activities contributing to increased CO2 levels?
    Burning fossil fuels and deforestation
  • What is a significant source of methane emissions?
    Farm animals
  • How does deforestation affect carbon dioxide levels?
    It reduces photosynthesis, increasing CO2
  • What are the products of complete combustion of fossil fuels?
    Carbon dioxide, water, and energy
  • What is produced when there is insufficient oxygen during combustion?
    Carbon monoxide and soot
  • How does soot contribute to environmental issues?
    It causes smog and global dimming
  • What effect does carbon monoxide have on the body?
    It replaces oxygen in haemoglobin
  • How are nitrogen oxides formed?
    From high temperature reactions of nitrogen and oxygen in cars
  • What are the effects of nitrogen oxides on health and the environment?
    Damage lungs and form acid rain
  • What are the consequences of acid rain?
    • Damages buildings
    • Corrodes metals
    • Damages plants
  • What are the products of incomplete combustion of fossil fuels?
    Carbon monoxide and soot
  • How is carbon monoxide from incomplete combustion harmful?
    Carbon monoxide takes the place of oxygen in hemoglobin, reducing oxygen transport