Summary of GCSE Chemistry - Elements, Isotopes & Relative Atomic Mass #2

An atom is made up of a central nucleus with protons and neutrons, and electrons orbiting around it.

The number of protons determines the element.

Elements are organized in the periodic table, with each box representing a different element.

Atomic number represents the number of protons in an element's atoms.

Isotopes are different forms of the same element with the same number of protons but different number of neutrons.

Isotopes react in the same way chemically.

Relative atomic mass is the average mass of all isotopes that make up an element.

Calculation of relative atomic mass involves multiplying isotope abundance by mass, summing the values, and dividing by the sum of abundances.

Copper example is used to demonstrate the calculation of relative atomic mass.

The relative atomic mass of copper is calculated to be 63.6.

Notable Quotes

— 02:54 — « Isotopes are different forms of the same element that have the same number of protons but a different number of neutrons. »

— 03:54 — « Lets take a look at copper as an example. »

— 06:31 — « And this number that we found is the relative atomic mass. »