U7 Day 1 - Atomic Theory & Atomic Structure Practice

Front

Subatomic particles with a positive charge

Back

Protons are subatomic particles found in the nucleus of an atom, carrying a positive charge.

Front

Calculation used to find the number of neutrons in an atom

Back

To find the number of neutrons, subtract the atomic number from the atomic mass: Neutrons = Atomic Mass - Atomic Number.

Front

Measure mainly of the nuclear particles: protons + neutrons

Back

Atomic Mass is the total number of protons and neutrons in an atom's nucleus.

Front

Subatomic particles found on the outermost shell & responsible for the atom's reactivity

Back

Valence Electrons are the electrons in the outermost shell of an atom that determine its chemical reactivity.

Front

Calculation to find the charge of an ion

Back

To find the charge of an ion, count protons as positive and electrons as negative, then add them: Charge = Protons - Electrons.

Front

What are neutrons?

Back

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

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 an isotope?

Back

Isotopes are variants of the same element that have the same number of protons but different numbers of neutrons.

Front

What is the role of electrons in an atom?

Back

Electrons are negatively charged subatomic particles that orbit the nucleus and are involved in chemical bonding.

Front

What is the difference between atomic mass and atomic weight?

Back

Atomic mass is the mass of a specific isotope, while atomic weight is the average mass of all isotopes of an element, weighted by their natural abundance.