Chemical Bonding Unit Test

The forces between atoms that create chemical bonds are a result of interactions between

Electrons

What type of bond exists between carbon (2.5) and oxygen (3.5)

Polar covalent

2Na + Cl2 —> 2NaCL is what type of reaction

A bond is formed and energy is released

An element with an electronegatitivity of 0.9 bonds with an element with electronegativity of 3.0. What type of bond is it?

Ionic formed between a metal and nonmental

Ionic compounds have:

A higher boiling and melting point

What happens to the energy level and stability of two bonded atoms once they seperate

Potential energy increases and stability decreases

Ionic vs Covalanet Bonds

Ionic : 1.7-3.3
Polar Covalent : 0.3-1.7
NonPolar Covalent: 0-0.3

A solid substance has excellent electric conductivity. The chemical bonds of the substance are

Metallic because the valence electrons are stationary

Covalent bonds are formed when

Electrons are shared between atoms

Ionic bonds are formed when

Electrons are transferred from one atom to another

A metallic bond is

A sea of electrons with free floating valence atracted to postively charged metal ions

Rank inermolecular forces in order of weakest to strongest

London dispersion, Dipole-Dipole, Hydrogen bonds

Describe intramolecular forces

Inside the molecule, stronger than inter, made by covalent bonds D

Describe intermolecular forces

Between molecules and weaker, made by forces of attraction between molecules