Atoms, Elements, Molecules, Compounds

Front

What is an atom?

Back

An atom is the smallest particle that is the basic building block of matter.

Tags

NGSS.MS-PS1-1

Front

What is a molecule?

Back

A molecule is a group of two or more atoms bonded together.

Tags

NGSS.MS-PS1-1

Front

What is a compound?

Back

A compound is a substance formed when two or more different elements are chemically bonded together.

Tags

NGSS.MS-PS1-1

Front

What is an element?

Back

An element is a pure substance that cannot be broken down into simpler substances by chemical means.

Tags

NGSS.MS-PS1-1

Front

Is NaCl a compound or an element?

Back

NaCl is a compound, as it is made of sodium and chlorine atoms bonded together.

Tags

NGSS.MS-PS1-1

Front

What is the difference between a molecule and a compound?

Back

All compounds are molecules, but not all molecules are compounds. A molecule can consist of the same type of atoms (like O2), while a compound consists of different types of atoms.

Tags

NGSS.MS-PS1-1

Front

What is the chemical formula for table salt?

Back

The chemical formula for table salt is NaCl.

Front

What do we call two or more atoms of the same element bonded together?

Back

This is called a molecule.

Tags

NGSS.MS-PS1-1

Front

Can a molecule be made of just one type of atom?

Back

Yes, a molecule can be made of just one type of atom, such as O2 (oxygen gas).

Tags

NGSS.MS-PS1-1

Front

What is the smallest unit of a compound?

Back

The smallest unit of a compound is a molecule.

Tags

NGSS.MS-PS1-1