is a list of all known elements, ordered by increasing atomic number. It is split into vertical columns called groups, and horizontal rows called periods.

is a column on the periodic table that corresponds to the number of electrons in the outer shell of an atom.

is a horizontal row on the periodic table. Each period corresponds to a number of shells of electrons in an atom of an element.

a group of metals found in the central block of the periodic table.

Groups of elements in the periodic table

Science

In the Atomic structure and the periodic table unit, pupils will build on this knowledge to learn about how the structure of atoms in each element determine its position on the periodic table and affects its chemical and physical properties.

In the Atoms, elements and compounds unit, pupils learnt about atoms, the differences between elements and compounds and how particles reorganise in a chemical reaction

Patterns in the periodic table

is a soluble base and has a pH of greater than 7.

a substance has the properties of an alkali, or contains an alkali. It is often used to refer to solutions of soluble bases with pH greater than 7.

Group 1 and 2 metals

Elements found in Group 7 of the periodic table.

Group is a column on the periodic table that corresponds to the number of electrons in the outer shell of an atom.

Refers to a compound of a halogen with another element or group.

Is a substance that forms when a metal reacts with a non-metal. These reactions typically produce solid substances that can dissolve in water, like table salt.

Group 7 (halogens)

An inert substance is one which is not chemically reactive.

A noble gas is an element in Group 0 of the periodic table.

Patterns in the periodic table

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