Chemical Bonds
What is a chemical bond?
An electrostatic attraction between two atoms
Which of the following is NOT a property common to ionic compounds?
A. High melting and boiling point
B. Conducts electricity in the solid state
C. Brittle
D. None of the above
B. Conducts electricity in the solid state
K + O
K2O
The driving force for atoms to ionize, metals to form metallic bonds, and atoms to form covalent bonds is the order that comes from forming a _______ _______ ________ configuration.
Noble Gas Electron
What is the charge of P?
-3
What mathematical law describes the forces that cause chemical bonding?
Coulomb's Law
Why are metallic compounds malleable and ductile, while ionic compounds are brittle?
Since metallic compounds have a sea of electrons, they act as a glue to hold onto the metal ions
Na + OH
NaOH
How are metallic bonds similar to covalent bonds? How are they different?
Both involve sharing electrons, electrons in a covalent bond cannot move freely
Ba
+2
What determines the strength of the bond between two atoms?
The amount of charge and the distance between the charged particles
Why are covalent compounds often liquids or gasses at room temperature, but ionic and metallic compounds are solids?
The units are not connected in a network in a covalent bond like they are in metallic and ionic bonds. (The IMFs are weak)
Mg + Cl
MgCl2
Metallic, covalent, or ionic bond?
Metal atoms ionize and share their valence electrons freely with neighboring atoms in a lattice structure; the sea of electrons hold the positive metal ions together.
Metallic
I
-1
Why do atoms form chemical bonds?
To have a stable noble gas electron configuration
List 4 properties of a metallic compound
1. High melting point
2. Malleable
3. Ductile
4. Solid
Fe(lll) + SO4
Fe2(SO4)3
Metallic, covalent, or ionic bond?
Metals lose valence electrons to a nonmetal, resulting in opposite charged ions that attract to form a bond.
Ionic
Fe (lll)
+3
Which of the following is NOT a common type of chemical bond found in atoms?
A. Covalent Bond
B. Ion-dipole Bond
C. Metallic Bond
D. Ionic Bond
B. Ion-dipole Bond
What determines the strength of ionic compounds?
The amount of charge and distance between ions
NH4 + P
(NH4)3P
Metallic, covalent, or ionic bond?
Nuclei of nearby atoms attract electrons from the neighboring atom cooperatively so that the electrons are shared to form the bond
Covalent
Pt (lV)
+4