combustion and flame

Water is not used to control fires involving electrical appliances.

• False
• True

Tags

NGSS.HS-ETS1-3

Which is not combustible substance

• Wood
• Cow dung cake
• stone
• paper

Are the molecules in wood the same as ash 

• yes 
• depends 
• does it matter 
• no

Tags

NGSS.MS-PS1-1

Another term for burning is

• Fire triangle
• Magnesium oxide
• Combustion
• Bustion

Why do we burn a fuel?

• To have fun

• To release energy

• To lose energy

• To produce carbon dioxide

What does this hazard symbol warn of?

• The substance is explosive

• The substance burns easily

• The substance supplies oxygen to fires

• The substance puts out fires

Which of the following chemical reactions involve combustion?

• A forest fire

• Human digestion

• A car using petrol

• All of the above

Is the combustion reversable

• Yes.
• No.

Tags

NGSS.MS-PS1-2

Combustion is a scientific word for:

• exploding
• burning
• evaporating
• getting hotter

A fuel is:

• a substance formed from living organisms that lived a long time ago
• a substance that explodes
• a substance that contains hydrocarbons
• a substance that transfers energy usefully, usually by heating.

Tags

NGSS.MS-PS3-5