Atoms and Periodic Table Flashcard

Front

Who discovered that atoms have a nucleus?

Back

Ernest Rutherford

Front

What determines the mass number of an element?

Back

Protons and Neutrons

Front

What is the smallest unit of matter that retains its chemical properties?

Back

Atom

Front

What type of charge does an electron have?

Back

Negative (-)

Front

What is a proton?

Back

A subatomic particle found in the nucleus of an atom with a positive charge.

Front

What is a neutron?

Back

A subatomic particle found in the nucleus of an atom with no charge.

Front

What is an atom?

Back

The basic unit of a chemical element, consisting of a nucleus surrounded by electrons.

Tags

NGSS.MS-PS1-1

Front

What is the atomic number?

Back

The number of protons in the nucleus of an atom, which determines the element's identity.

Front

What is the periodic table?

Back

A tabular arrangement of elements organized by increasing atomic number.

Front

What are valence electrons?

Back

Electrons in the outermost shell of an atom that determine its chemical properties.

Tags

NGSS.HS-PS1-1

NGSS.HS-PS1-2