Elements, Molecules, Metals, Compounds, and Periodic Table Flashcards

Vocabulary flashcards based on lecture notes about elements, molecules, metals, compounds, and the periodic table for Year 8 Science.

Element

A pure substance made of only one type of atom.

Molecule

Two or more atoms joined together.

Lattice

A structure where atoms are arranged in a repeating pattern.

Chemical Formula

The symbols that show what a substance is made of.

Chemical Bond

The attractive force that attracts atoms together

Mixture

A combination of substances that can be physically separated.

Chemical Formula

Shows the types and numbers of atoms in a molecule

Atomic Number

The number of protons in an atom.

Group

Vertical column in the periodic table.

Period

Horizontal row in the periodic table.

Periodic Table

A table showing all known elements

Noble Gas

Unreactive gases in Group 18

Reactants

Substances undergoing change in a chemical reaction

Products

Substances that are formed in a chemical reaction.

Element

Pure