Atoms, Elements, Periodic Table

Front

What is an atom?

Back

The smallest unit of an element that retains the properties of that element.

Front

What is an element?

Back

A pure substance made of only one type of atom.

Front

What is the periodic table?

Back

A chart that organizes all known elements by their atomic number and properties.

Front

What does the atomic number represent?

Back

The number of protons in the nucleus of an atom.

Front

What are alkali metals?

Back

The group of elements in Group 1 of the periodic table, known for being highly reactive.

Front

Which alkali metal is the least reactive?

Back

Lithium.

Front

What is a noble gas?

Back

An element in Group 18 of the periodic table that is non-reactive due to having a full outer electron shell.

Front

What is nuclear fission?

Back

A process where the nucleus of an atom splits into smaller parts, releasing a large amount of energy.

Front

What is nuclear fusion?

Back

A process where two light atomic nuclei combine to form a heavier nucleus, releasing energy.

Front

What are transition metals?

Back

Elements found in Groups 3-12 of the periodic table, known for their ability to form various oxidation states.