Front

What is Atomic Theory?

Back

Atomic Theory is a scientific theory that states that matter is composed of discrete units called atoms. It explains the nature of atoms, their structure, and how they interact with each other.

Front

What is an isotope?

Back

Isotopes are variants of a particular chemical element that have the same number of protons but different numbers of neutrons, resulting in different mass numbers.

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 mass number?

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The mass number is the total number of protons and neutrons in an atom's nucleus.

Front

What particle has a positive charge?

Back

Proton.

Front

What particle has a negative charge?

Back

Electron.

Front

What particle has no charge?

Back

Neutron.

Front

What is the nucleus of an atom?

Back

The nucleus is the central part of an atom, containing protons and neutrons, and it holds most of the atom's mass.

Front

What is the electron cloud?

Back

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

Front

What is the Bohr model of the atom?

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The Bohr model describes the atom as having electrons in specific energy levels or orbits around the nucleus.