Chemical bonding

How is a chemical bond formed

When atoms are held together by an attractive force

Chemical bonding

Chemical bonding is the process by which atoms combine to form molecules or compounds through the sharing or transfer of electrons.

Name the 3 types of chemical bonding

Covalent, Ionic and Metallic

lewis structure

dots and crosses to represent electrons on in atoms

Covalent bonding

Bonding between non-metals where electrons are shared rather than transferred

Ionic Bonding

Bonding between metals and non-metals where electrons are transferred from one atom to another rather than shared

ions

Ions are atoms or molecules that have gained or lost electrons, resulting in a positive or negative charge.

How are ions in a chemical bond held together

Through in electrostatic force

crystal lattice

Regular repeating arrangement of atoms or molecules in a solid, forming a three-dimensional structure.

crystalline

A substance with an ordered and repeating atomic structure, resulting in a regular geometric shape.

Blurt the 5 properties of ionic compounds

…

name the 3 kinds of drawing models

simple circle diagrams

stick and ball model

space filling model

What is a metallic bond

The electrostatic force between the positively charged nuclei of an atom and the delocalized electrons of a metal.

What is metallic bonding

When a pool of delocalized electrons surround the positive metal ion core

Why do metals have delocalized electrons

They lose control of their valent electrons due to low ionization energy

Why are metals good thermal and electric conductors referring to the electron sea model.

Delocalized electrons can move and can carry charge making it a good conductor of electricity and they can carry kinetic energy from one part to another making it a good thermal conductor.

single covalent bond

Type of chemical bond formed when two atoms share a pair of electrons, resulting in a stable molecule.

double and triple covalent bond

Double covalent bond: A bond where two pairs of electrons are shared between two atoms. Triple covalent bond: A bond where three pairs of electrons are shared between two atoms.

Alloys

Alloys are materials made by combining two or more metals by melting then mixing

heterogenous mixture

A type of mixture where components are not uniformly distributed, allowing them to be visibly distinguished. Examples include salad and granite.

homogenous mixture

Homogenous mixture: A mixture with uniform composition and properties throughout. Example: saltwater. Also known as a solution.