What will happen if the amount of oxygen is increased in the air?

In the event of doubling the oxygen levels on Earth, the most significant changes would be the speeding up of processes like respiration and combustion. With the presence of more fuel, i.e. oxygen, forest fires would become more massive and devastating. Anything and everything would burn more easily.

What happens to the flame when the concentration of oxygen increases?

For low oxygen concentrations the flame spread rate decreases as the velocity of the gas flow increases. For high oxygen concentrations, however, the spread rate increases with the flow velocity, reaches a maximum and then decreases as the gas velocity increases.

What contributes to combustion more than air?

Both nitrogen and oxygen contribute for combustion.

Can combustion happen without oxygen?

No. A fire cannot burn without oxygen. Hydrogen is combustible or flammable – meaning, it can catch fire and burn easily only if there is an adequate supply of an oxidizer such as oxygen – to sustain enough thermal energy to keep the fire going after it has been ignited. It is a chemical reaction.

What would happen if the oxygen level decreased on earth?

Terrestrial life will cease to exist, as will aquatic life. The ozone layer – which is made up of oxygen – will deplete, exposing Earth and its oceans to high levels of ultraviolet light and heat from the burning sun.

What is the role of oxygen in the process of combustion?

Oxygen plays the role of oxidizer. It is a very good oxidiser. The process of combustion involves the oxidation of fuel by the oxidiser to liberate heat. Hence is it the oxygen that oxidises the fuel to give off heat.

How does oxygen affect the burning process?

Oxygen. Oxygen supports the chemical processes that occur during fire. When fuel burns, it reacts with oxygen from the surrounding air, releasing heat and generating combustion products (gases, smoke, embers, etc.). This process is known as oxidation.

How does oxygen support combustion?

What are the three important things needed of combustion to occur?

Three things are required in proper combination before ignition and combustion can take place—Heat, Oxygen and Fuel.

• There must be Fuel to burn.
• There must be Air to supply oxygen.
• There must be Heat (ignition temperature) to start and continue the combustion process.

What type of change is combustion?

chemical change
Combustion, however….. start with carbon, and oxygen C(s)+O2(g) , and end up with carbon dioxide CO2(g) a completely different molecule – that’s a chemical change.

What are the three important things needed for combustion to occur?

Oxygen, heat, and fuel are frequently referred to as the “fire triangle.” Add in the fourth element, the chemical reaction, and you actually have a fire “tetrahedron.” The important thing to remember is: take any of these four things away, and you will not have a fire or the fire will be extinguished.