Atomic Structure & Periodic Table

Front

What is the atomic number?

Back

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

Front

What is the nucleus of an atom?

Back

The nucleus is the tiny, dense, positively charged center of an atom that contains most of its mass.

Front

What are the vertical columns in the Periodic Table called?

Back

The vertical columns in the Periodic Table are called groups.

Front

What is a period in the Periodic Table?

Back

A period is a horizontal row of elements in the Periodic Table.

Front

What do elements in the same group have in common?

Back

Elements in the same group have similar properties.

Front

What is an atom?

Back

An atom is the smallest unit of matter that retains the properties of an element.

Front

What are protons?

Back

Protons are positively charged particles found in the nucleus of an atom.

Front

What are neutrons?

Back

Neutrons are neutral particles found in the nucleus of an atom, contributing to its mass.

Front

What are electrons?

Back

Electrons are negatively charged particles that orbit the nucleus of an atom.

Front

What is the electron cloud?

Back

The electron cloud is the region around the nucleus where electrons are likely to be found.