Conservation of Mass

Matter cannot be created or destroyed is best described as what law?

• Conservation of Matter

• The Big Bang Theory

• Gravity

• Einstein Theory of General Relativity

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5

The molecule CO₂ Carbon dioxide has how many oxygen atoms?

• 3

• 2

• 1

• This is NOT carbon dioxide

Tags

NGSS.MS-PS1-1

The molecule CO₂ Carbon dioxide has how many carbon atoms?

• 3

• 2

• 1

• This is NOT carbon dioxide

Tags

NGSS.MS-PS1-1

The molecule water H₂O has how many hydrogen atoms?

• 3

• 2

• 1

• 0

Tags

NGSS.MS-PS1-1

The molecule water H₂O has how many oxygen atoms?

• 3

• 2

• 1

• 0

Tags

NGSS.MS-PS1-1

Identify this molecule: H₂O₂.

• Water of course

• Water

• 2 molecules of water

• Hydrogen peroxide

Tags

NGSS.MS-PS1-1

C + O₂ -> CO₂ How many carbons are present at the beginning of this chemical reaction?

• 1

• 2

• 3

• 0

Tags

NGSS.MS-PS1-1

The substances at the start of a chemical reaction are called?

• Reactants

• Products

• Precipitate

• Law of Conservation of Mass

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-2

The substances that are produced at the end of a chemical reaction are called?

• Reactants

• Products

• Precipitate

• Law of Conservation of Mass

Tags

NGSS.MS-PS1-2

Does this chemical reaction obey the Law of Conservation of energy?

Ag + O₂ -> AuO₂

• Yes because the amount of atoms at the start and end are the same

• Yes because there are 3 atoms in the reactants and 3 atoms in the products

• No because the amount of atoms at the start and at the end of the reaction are the same

• No because we have a new element created

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-5