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Combustion Flame And Fuels > Combustion AI- Version > Flashcards

Combustion AI- Version Flashcards

1
Q

What are combustible substances?

A

Substances that catch fire easily in the presence of oxygen

Mostly hydrocarbons

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2
Q

What are the products formed when combustible substances burn?

A

Carbon dioxide, water, and heat

Light is also released as a by-product.

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3
Q

What are the conditions necessary for combustion to take place?

A

Presence of combustible substance, supporter of combustion, heating to ignition temperature

Oxygen is the most common supporter of combustion.

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4
Q

What is a supporter of combustion?

A

Any substance or medium that supports combustion

Oxygen in the air is the most common supporter.

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5
Q

What is ignition temperature?

A

The lowest temperature at which a substance catches fire and starts burning

This temperature is necessary for combustion to occur.

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6
Q

Fill in the blank: Oxygen is the______ common _______ of combustion.

A

supporter

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7
Q

True or False: Hydrogen is a supporter of combustion.

A

False

Hydrogen is a non-supporter of combustion.

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8
Q

List some examples of combustible substances.

A
  • Wood
  • Paper
  • Coal
  • Coke
  • Hydrogen
  • LPG
  • Natural gas
  • Petrol
  • Kerosene
  • Diesel
  • Alcohol
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9
Q

List some examples of non-combustible substances.

A
  • Sand
  • Rock
  • Water
  • Glass
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10
Q

What happens when combustible substances burn?

A

They release carbon dioxide, water, heat, and light

This reaction is essential for many energy processes.

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11
Q

Combustion is a _________ change

A

Chemical

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12
Q

Define COMBUSTION

A

Process of burning a substance in the presence of oxygen with the evolution of heat and gas is called combustion.

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13
Q

Is combustion an exothermic or endothermic reaction?

A

Exothermic

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14
Q

It can give of light and heat. When it burns it is called a ________ but when it glows it is called __________.

A

Flame
Ember

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15
Q

Fuel + O2 ➡️

A

Heat (biproduct)
H2O
CO2
Light ( biproduct)

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16
Q

Substances that have low ignition temp and catch fire easily, such as alcohol (not combustible)

A

Inflammable substances

17
Q

Types of combustion

A

Slow
Rapid
Spontaneous
Explosion

18
Q

Digestion and rusting are types of ________ combustion

A

Slow

19
Q

Slow combustion takes place slowly and at low ________. It releases __________ amt of heat🔥🔥

A

Less

20
Q

Is there flame in slow comb?

A

No

21
Q

When does rapid combustion take place?

A

When a substance burns RAPIDLY with large amounts of HEAT.

22
Q

What type of combustion is the burning of a matchstick and combustion of LED.

A

Rapid

Combustion Flame And Fuels (2 decks)

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