science combustion Flashcards
learn combustion
what is another name for Combustion?
It is another name for burning.
What is exothermic?
A reaction in which energy is given out to the surroundings. The surrounding then have more energy than they started with so the temperature increases.
What does endothermic mean?
A reaction in which energy is taken in form the surroundings.
What is it called when a reaction takes energy form there surroundings?
endothermic.
What three things do you need to make a fire (fire triangle)?
You will need oxygen (or air), heat and fuel.
When you cover the chip pan fire (oil fire) with a damp cloth what do you remove?
You remove the oxygen.
When there’s a forest fire, you cut down a line of tree’s to stop the fire from spreading. what does this remove?
This removes the fuel.
When there is a forest fire, you spray with water, which puts out the fire. What part of the fire do you remove?
You remove the heat
What does fuels mean?
A material that is used to produce heat, like coal, oil or gas.
what does hydrocarbons mean?
Hydrocarbon is a compound that contains hydrogen and carbon only.
What is complete combustion?
Complete combustion is the burning in a plentiful supply of oxygen or air. Hydrocarbon produces water vapour and carbon dioxide.
In complete combustion, When there is plenty of air, complete combustion happens:
- The hydrogen atoms combine with oxygen to make water vapour
- The carbon atoms combine with oxygen to make carbon dioxide
- the maximum amount of energy is realised
What is the most natural gas?
.the most natural gas is methane.
What are candles made out of?
hydrocarbon.
how can you detect when there is carbon dioxide in the test?
limewater.
