Chem 6.1 Forming Chemical bonds and compounds Flashcards
Why does a metal atom lose electrons
Low IE
Ionic compounds involve the electron transfer of
Metals and nonmetals
Why does a nonmetal gain electrons
High IE
Ionic bonds
The force of attraction between oppositely charged ions
What determine show many electrons will be gained or lost by each of the atoms
Noble gas configuration
What are the 2 ways to increase the strength and melting point of an ionic bond
- Make charges of ions greater
2. Get the ions closer
The positive and negative ions of a compound form a structure called
Crystal lattice
Physical properties of ionic compounds
High melting points (need to break very strong ionic bonds
Always is solid at room temperature
Brittle (when 2 like charges get too close they break away from each other
Does not conduct electricity (no charge and can’t move–UNLESS molten or dissolved)
A molecular compound is created when two
Nonmetal atoms share electrons
How any electrons in a covalent bond
2
Molecule
A group of covalently bonded atoms
Physical properties of molecular compounds
Low to moderate melting points–only weak intermolecular bonds needed to be broken
Can be solids liquids or gases at room temperature (intermolecular bonds have varying strengths)
Can never conduct electricity in any form or state, molecules are neutral
Metals after metallic bonding create a
Sea of electrons (delocalized)
Physical properties of metals
Very high melting points (metallic bonds are very strong)
Solid at room temperature
Conduct electricity in all states(e–charged particles–are mobile)
Malleable (can be dented or burnt w/o breaking)
Formula unit
Simplest ratio of ions in an ionic compound
