What property is used to predict whether a bond is primarily ionic or primarily covalent?
What is electronegativity
100
What type of bond results from the sharing of four electrons?
What is double bond
100
characterized by the sharing of one or more electron pairs between two atoms
What is covalent bond
100
A solid whose particles are characterized by a regular, repeating, three-dimensional
pattern is an
What is crystalline
100
In what category are the elements fluorine, bromine, and iodine
What is halogens
200
What causes the bright, colored lines in the spectrum of glowing hydrogen gas?
What is electrons dropping from higher to lower energy levels
200
What is a covalent bond in which the bonding electron pair is pulled closer to the more
electronegative element?
What is polar bond
200
type of chemical bond present between atoms in such substances as CaBr 2 and NaCl
What is ionic bond
200
Kinetic energy is associated with an object's
What is motion or movement
200
In what category are the elements magnesium, calcium, and barium?
What is alkaline earth metals
300
What does absolute zero equal?
What is 0. K or -273.15°C
300
What does the uncertainty principle state about the position and momentum of small
particles?
What is Position and momentum cannot be precisely measured simultaneously
300
tends to produce solids that are malleable and ductile
What is metallic bond
300
The simplest repeating unit in a crystal is a
What is unit cell.
300
Which of the following elements would you expect to have the greatest electronegativity?
What is Cl
400
What is the heat required to cause a unit rise in the temperature of a unit mass of a given
substance?
specific heat
400
What determines an atom's identity as an element?
What is number of protons
400
characterized by the transfer of electrons from one atom to another
What is ionic bond
400
What term refers to a bonding situation in which electrons are shared by more than two
atoms?
What is delocalization or resonance
400
In what category are the elements boron, silicon, and germanium
What is semimetals
500
equations is the usual form of the ideal gas law?
What is PV = nRT
500
What principle states that elements tend to react chemically to achieve a noble-gas
electron configuration, whether by losing, gaining, or sharing electrons?
What is octet rule
500
A molecule of CO2, in which two polar bonds point symmetrically in opposite directions, is
What is nonpolar
500
formula for sodium sulfate.
What is Na₂SO₄
500
In the production of a metal part, molten steel at its melting point is poured into a mold
and allowed to solidify. Which of the following quantities is involved in this process?
A. heat of reaction
B. specific heat
C. heat of formation
D. heat of fusion