COMBUSTION

Which is not combustible substance

• Wood
• Cow dung cake
• stone
• paper

What is produced when combustable substance is in the vapour state and burn strongly in the presence of of air?

• heat 
• light
• flame
• fumes

Tags

NGSS.MS-PS1-4

Are the molecules in wood the same as ash 

• yes 
• depends 
• does it matter 
• no

Tags

NGSS.MS-PS1-1

The condition which are required for combustion to take place are:

• fuel
• ignition temperature
• oxygen
• all of these

Is combustion a reversible reaction?

• Yes.
• No.

Tags

NGSS.HS-PS1-6

What are the types of combustion?

• Complete & incomplete
• Incomplete & inexact
• Impossible & complete
• Computer & incompete

Complete combustion is when there is plenty of oxygen to react with. 

• True
• False

Incomplete combustion is when there is a limited amount of oxygen.

• True
• False

What does incomplete combustion produce that complete combustion doesn't?

• Carbon monoxide
• Water

Tags

NGSS.MS-PS1-2

What is carbon monoxide?

• A toxic gas
• A large solid

Tags

NGSS.HS-PS1-2