Molecules

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together, representing the smallest fundamental unit of a chemical compound.

Tags

NGSS.MS-PS1-1

Front

True or False: All molecules are compounds.

Back

False

Front

When compounds form, what happens to the individual chemical properties of the elements?

Back

The elements lose their individual chemical properties and take on new properties.

Tags

NGSS.MS-PS1-1

Front

What do you call a molecule that consists of two or more different elements?

Back

A compound.

Tags

NGSS.MS-PS1-1

Front

What is the difference between a molecule of an element and a molecule of a compound?

Back

A molecule of an element consists of only one type of atom, while a molecule of a compound consists of two or more different types of atoms.

Tags

NGSS.MS-PS1-1

Front

What does a balanced chemical equation indicate?

Back

A balanced chemical equation indicates that the number of atoms for each element is the same on both sides of the equation.

Tags

NGSS.MS-PS1-1

NGSS.MS-PS1-5

Front

What is an example of a molecule of an element?

Back

O2 (oxygen gas) is an example of a molecule of an element.

Tags

NGSS.MS-PS1-1

Front

What is an example of a molecule of a compound?

Back

H2O (water) is an example of a molecule of a compound.

Tags

NGSS.MS-PS1-1

Front

What is the term for the representation of a molecule using chemical symbols?

Back

Chemical formula.

Front

What is a subscript in a chemical formula?

Back

A subscript indicates the number of atoms of an element in a molecule.