Chemical Bonds
Bonding described by a Sea of Electrons
What is the metallic bonding?
Which of the following is a typical property of an ionic compound?
a.low melting point
b.poor conductor of electric current when melted
c.tendency to shatter when struck
What is tendency to shatter when struck?
Brittle
You see a structural formula in which the symbols for elements are connected by a long dash. You can assume that the chemical bonds in the compound are
What is a covalent bond?
Ammonium Phosphate
What is (NH4)PO4 ?
CO2 has two______________ bonds and is a _____________ molecule
What is polar and nonpolar?
Typically, atoms gain or lose electrons to achieve
What is noble gas configuration
Which of the following statements correctly describes the substance with the formula KI? a.Molecules of potassium iodide contain one atom of potassium and one atom of iodine. b.There is a one-to-one ratio of potassium ions to iodide ions. c.Potassium iodide is a molecular compound. d.Potassium iodide is a polyatomic ion.
What is a one-to-one ratio of potassium ions to iodide ions.
A polar covalent bond,
What is electrons are not shared equally between atoms?
What is electronegativity difference > 0.4?
In an ionic compound, the attractions between cations and ____________________ hold the compound together.
What is anions
The chemical formula for Iron II Oxide, shows that the compound contains _________________iron ions for every ____________________ oxygen ions.
What two and two, or one to one
In an electron dot diagram, the symbol for an element is used to represent
What is nucleus and all non-valence electrons
In the compound MgCl2, the subscript 2 indicates that
What is the charge of the Magnesium ion?
What is you need two chloride ions for every one Magnesium ion?
You are given the melting points of three unknown substances and are asked to predict which one is an ionic compound. You would select the compound with the ____________________ melting point.
What is highest?
CH3OH has the VSEPR shape
What is tetrahedral?
Ionization energies tend to
What is increase from left to right across a period
Which statement best describes the properties of sodium chloride?
a.Sodium chloride is a malleable solid.
b.Solid sodium chloride is a good conductor of electric current.
c.Sodium chloride has a low melting point.
d.Liquid sodium chloride is a good conductor of electric current.
What is liquid sodium chloride is a good conductor of electric current?
The VSEPR shape of a molecule with 4 atoms around a central atom
What is tetrahedral?
The ions in solid sodium chloride are arranged in a structure called a(an) ____________________ lattice
What is crystaline?
VSEPR shape that has three atoms and one set of lone pairs around a central atom
What is trigonal pyramidal?
JACKPOT!!!! IF YOU ANSWER CORRECTLY YOU GET DOUBLE THE POINTS!!! Which of the following compounds does NOT contain molecules? H20, CO2, H2, NACl
What is NACl
When two atoms of the same nonmetal react, they often form a(an)
What is a di-atomic molecule?
The VSEPR shape of a molecule with two atoms around a central atom and one or two sets of lone pairs.
What is Bent
Zn2(SO4)
What is Zinc I phosphate?
Two factors that determine whether a molecule is polar are the types of atoms in the molecule and the ____________________ of the molecule.
What is shape?
Symmetry of the shape