Exploring the Law of Conservation of Mass

What does the law of conservation of mass state about isolated systems?

• Mass and energy can be created but not destroyed

• Mass and energy can neither be created nor destroyed

• Only energy can be created and destroyed

• Only mass can be transferred out of the system

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NGSS.HS-PS1-7

What molecules are formed when carbon, hydrogen, and oxygen atoms combine with energy?

• Water and carbon dioxide

• Methane and helium

• Sulfur dioxide and hydrogen

• Nitrogen and oxygen gas

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NGSS.MS-PS1-1

NGSS.MS-PS1-2

What happens when methane combusts with oxygen?

• It releases light and heat without changing

• It forms water and carbon monoxide

• It converts into hydrogen gas and carbon

• It transforms into carbon dioxide and water, releasing energy

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NGSS.HS-PS1-4

How many carbon dioxide molecules result from combusting propane?

• Three

• Two

• Four

• One

What fundamental cosmic event is responsible for the creation of hydrogen atoms?

• Formation of the Moon

• The Big Bang

• Black holes merging

• Supernova explosions

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NGSS.HS-ESS1-2

How do stars contribute to the formation of heavier elements like carbon and oxygen?

• Through chemical reactions with space dust

• By absorbing cosmic radiation

• By breaking down larger molecules

• Through nuclear fusion of lighter elements

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NGSS.HS-ESS1-3

NGSS.HS-PS1-8

What does Einstein's famous equation imply about mass and energy?

• Mass can convert into energy

• Neither A nor B

• Energy can transform into mass

• Both A and B

What happens to the elements produced in a supernova?

• They return to their original star

• They form new stars

• They vanish into black holes

• They disperse into space and contribute to new planetary systems

Tags

NGSS.HS-ESS1-3

How are the atoms that form everything on Earth interconnected?

• Via chemical bonds in molecules

• Through magnetic fields

• They originated from stardust

• Through biological processes

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NGSS.HS-ESS1-3

What famous phrase did Carl Sagan use to describe our cosmic connection?

• Universal dance

• Cosmic ballet

• Children of the stars

• Made of star stuff