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In a lewis structure, a dash represents
a shared pair of electrons
The salts NaCl and CaCl2
are held together by ionic bonds
the weak intermolecular forces resulting from polar molecules are called
dipole dipole forces
you can estimate the degree to which a bond between two atoms is ionic or covalent by calculating the
difference in the atoms electronegativities
metals are malleable because when struck, one plane of metal atoms
can slide past another plane without breaking bonds
which of these is responsible for the good electrical conductivity of metals?
the ability of electrons to move freely about the crystal structure
atoms seldom exist as independent particles in nature because
atoms are more stable when they combine with other atoms
the arrangement of valence electrons in a metallic bond is best described as
a sea of free moving electrons
the chemical bond formed from the electrostatic attraction between oppositely charged particles
ionic bond
which of the following covalent molecules has the strongest bond
the one with the triple bond
which is the strongest intermolecular force
hydrogen bonding
a charged group of covalently bonded atoms is known as a
polyatomic
which are the intermolecular forces that can act between non polar molecules
london dispersion forces
the unequal sharing of two pairs of electrons is known as
double, polar covalent bond
bond energy is the energy
required to break a chemical bond and form separate neutral atoms
anhydrates can be defined as
compounds that have had their water molecules removed
a compound with water molecules incorperated into its crystal structure would be called
a hydrate
which of the following could be an empirical formula
N2O3
the lowest whole number ratio of the elements in a compound is called the
empirical formula
ribos has a formula mass of 150 amu and a chemical composition that is 40% carbon, 6.67 hydrogen, and 53% oxygen. what is the molecular formula of this compound?
C5H10O5
what is the percent composition of potassium in potassium nitrate?
38.67%
what is not true about empirical and molecular formulas?
the empirical formula of a compound can be triple its molecular formula
What is the empirical formula for indium sulfide if it is 70.48% Indium and 29.52% sulfur?
In2S3
what is the empirical formula for benzene, C6H6?
CH
What is the correct molar mass of Ag3PO4
418.58 g/mol
what is the percent composition of iron in iron(III)chloride, FeCl3?
34.43%
the percent composition of a compound is
the percentage by mass of each element in the compound
what is the molecular formula for the compound with an empirical formula of NO2 and a formula mass of 92.02u?
N2O4
what is the correct formula for zinc hydroxide Zn(OH)2?
99.41g
chemical properties such as reactivity and bond energy are influenced by what force?
intermolecular
london dispersion force has an impact on what properties of a compound?
boiling point