Phy. Sci. Ch. 7

Front

What is the molar mass of methane (CH4)?

Back

16.0 g

Front

What does the law of conservation of mass state?

Back

Mass is neither created nor destroyed.

Tags

NGSS.HS-PS1-7

Front

What particle is transferred in a redox reaction?

Back

electron

Tags

NGSS.HS-PS1-2

Front

What is Avogadro’s number?

Back

6.02 x 10^23

Front

Which equation best represents the law of conservation of mass?

Back

C

Tags

NGSS.HS-PS1-7

Front

Define molar mass.

Back

The mass of one mole of a substance, typically expressed in grams per mole (g/mol).

Tags

NGSS.HS-PS1-7

Front

What is the significance of Avogadro's number in chemistry?

Back

It represents the number of atoms, ions, or molecules in one mole of a substance.

Front

Explain a redox reaction.

Back

A chemical reaction involving the transfer of electrons between two species.

Front

What is the difference between an atom and a molecule?

Back

An atom is the smallest unit of an element, while a molecule is a group of two or more atoms bonded together.

Tags

NGSS.MS-PS1-1

Front

What is the role of electrons in chemical bonding?

Back

Electrons are involved in forming bonds between atoms, either by sharing (covalent bonds) or transferring (ionic bonds).

Tags

NGSS.HS-PS1-1