What Happens When Fuels Burn

What does burning ethanol release?

• Only light

• Only heat

• Energy in the forms of heat and light

• Only sound

Tags

NGSS.MS-PS1-2

What is a major environmental concern related to burning carbon-containing fuels?

• Decrease in oxygen levels

• Increase in carbon dioxide in the atmosphere

• Production of harmful solids

• Decrease in water vapor

Tags

NGSS.MS-ESS2-6

What are fuels?

• Substances that release energy when they burn

• Substances that absorb energy

• Substances that cool down when burned

• Substances that do not change when burned

What are the types of combustion?

• Complete & incomplete

• Incomplete & inexact

• Impossible & complete

• Computer & incompete

What does the Law of Conservation of Matter imply about burning gasoline?

• Gasoline atoms disappear completely

• Gasoline atoms transform into visible solids

• Gasoline atoms exist as invisible gases

• Gasoline atoms are destroyed

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

What is released during burning reactions?

• Water and sound

• Light and sound

• Heat and light

• Water and heat

What is required for a burning reaction to occur?

• Low temperature

• High temperature

• No oxygen

• Water

Tags

NGSS.MS-PS1-4

What are the two products formed when ethanol burns?

• Carbon monoxide and water

• Carbon dioxide and water

• Oxygen and hydrogen

• Methane and water

Tags

NGSS.MS-PS1-5

Why does it seem like nothing is left of the liquid when ethanol burns?

• The liquid evaporates completely

• The gases produced are invisible and colorless

• The liquid turns into solid particles

• The liquid is absorbed by the air

Tags

NGSS.MS-PS1-5

What happens when hydrogen fuel is burned?

• It combines with nitrogen.

• It combines with carbon dioxide.

• It combines with oxygen.

• It combines with helium.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5