Atoms, Elements & Periodic Table Review

Front

What is an atom?

Back

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

Front

What are elements?

Back

Elements are pure substances that cannot be broken down into simpler substances by chemical means.

Front

What is the periodic table?

Back

The periodic table is a tabular arrangement of elements, organized by increasing atomic number and grouped by similar properties.

Front

What are protons?

Back

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

Front

What are neutrons?

Back

Neutrons are neutral subatomic particles found in the nucleus of an atom.

Front

What are electrons?

Back

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

Front

What is 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 atomic mass?

Back

Atomic mass is the weighted average mass of an element's isotopes, measured in atomic mass units (amu).

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in chemical bonding.

Front

What is a metal?

Back

Metals are elements that are good conductors of heat and electricity, typically shiny and malleable.