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I/GCSE Chemistry- Flames and combustion

Hazards

· igcse chemistry

This I/GCSE Chemistry blog post will look into the dangers of substances as well as the features of flames.

FLAMES

  • Gas flames can be made much hotter by the introduction of more air. 
  • The hottest part of the blue flame is just above the cone of unburnt gas. 

WHAT IS BURNING

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  • hydrocarbon= chemical that contains only carbon and hydrogen (e.g. gas cooker gas, candle wax).
  • A large proportion of natural gas is methane CH4. Other members of this family are propane and butane. 

Word equation for the process of burning: hydrocarbon + oxygen = carbon dioxide + water +e nergy

  • This equation tells us that once lit, a hydrocarbon will burn and release energy. 
  • The fuel for you body is a carbohydrate. 

The word equation that describes this is: carbohydrate + oxygen = carbon dioxide + water + energy

  • Carbohydrates are a family of chemicals which include sugars. 

HAZARD WARNING SYMBOLS

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  • highly flammable= hydrogen and hydrocarbons (propane, butane and acetylene.
  • toxic= ammonia, chlorine and sodium hydroxide
  • harmful= copper sulphate
  • irritant= copper sulphate
  • corrosive= nitric acid, sulphuric acid and alkalis (such as sodium hydroxide)
  • oxidising= potassium permanganate and nitric acid 

That is all!

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References:

https://www.google.com/url?sa=i&url=https%3A%2F%2Ffavpng.com%2Fpng_view%2Fghs-toxic-pictogram-occupational-safety-and-health-chemical-hazard-sign-png%2F43Ar9MR4&psig=AOvVaw1vfSUaCrsAZh9-ndxRcGfd&ust=1629695342385000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCIiLgbTuw_ICFQAAAAAdAAAAABAU

https://www.google.com/url?sa=i&url=https%3A%2F%2Fwww.solvents.org.uk%2Fhydrocarbon-solvents%2F&psig=AOvVaw2uJ-J_zhYWLSu_4dNRh6Wc&ust=1629695452917000&source=images&cd=vfe&ved=0CAsQjRxqFwoTCLjQnOfuw_ICFQAAAAAdAAAAABAO

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I/GCSE Chemistry- Reactions with alkanes and alkenes
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