Review of Atoms, Elements and Periodic Table

Front

What are atoms?

Back

Atoms are the basic building blocks of matter, consisting of protons, neutrons, and electrons.

Front

What is an element?

Back

An element is a pure substance made of only one type of atom, defined by its atomic number.

Front

What is the periodic table?

Back

The periodic table is a chart that organizes all known elements by their atomic number, electron configuration, and recurring chemical properties.

Front

Where are electrons located in an atom?

Back

Electrons are found in the outer 'cloud' surrounding the atom.

Front

What are valence electrons?

Back

Valence electrons are the electrons in the outermost shell of an atom that are involved in forming bonds.

Front

Which particles are found in the nucleus of an atom?

Back

Protons and neutrons are found in the nucleus of an atom.

Front

How many electrons can fit in the first energy level?

Back

The first energy level can hold a maximum of 2 electrons.

Front

What does atomic mass represent?

Back

Atomic mass represents the average mass of an element's atoms, measured in atomic mass units (amu).

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 are alkali metals?

Back

Alkali metals are elements in Group 1 of the periodic table, known for being highly reactive and having one valence electron.