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53 Cards in this Set
- Front
- Back
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Property that is used to predict whether a bond is primarily ionic or primarily covalent |
Electronegativity
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What is not a difference between compounds and mixtures |
Compounds are always homogeneous mixtures but mixtures are always heterogeneous
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what causes the bright, colored lines in the spectrum of glowing hydrogen gas |
electrons dropping from higher to lower energy levels
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What does absolute zero equal |
0K and -273.15 degrees
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What is the heat required to cause a unit rise in the temperature of a unit mass of a given substance |
specific heat
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which equations is the usual form of the ideal gas law |
PV=nRT
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What type of bond results from the sharing of four electrons |
double bond
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what term refers to very hard substances such as diamond silicon carbide and quartz that contain covalent bonds but do not consist of discrete molecules |
covalent networks
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what principle states that elements tend to react chemically to achieve a noble gas electron configuration, whether by losing, gaining, or sharing electrons |
octet rule
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what statement about exothermic chemical reactions is not true |
heat is absorbed
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what determines an atoms identity as an element |
number of protons
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What is not true about gases |
When the temperature of a gas decreases, its volume increases if the pressure is held constant
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What does the uncertainty principle state about the position and momentum of small particles |
position and momentum cannot be precisely measured simultaneously
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what is a covalent bond in which the bonding electron pair is pulled closer to the more electonegative element |
polar bond
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Characterized by the sharing of one or more electrons pairs between two atoms |
Covalent bond
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Type of chemical bond present between Atoms and such substances as CABR2 and in ACL's and was not yours |
Ionic bond
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Characterized by the sharing of valance electrons with many neighboring atoms forming a cloud or sea of delocalized electrons permeating the substance |
Metallic bond
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Tends to produce solids that are malleable and ductile |
Metallic bond
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Type of chemical bond present between Atoms and such substances as N2, O2, and CH4 |
Covalent bond
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Characterized by the transfer of electrons from one Atom to another |
Ionic bond
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Type of chemical bond usually formed between a metal Atom and a nonmetal atom |
Ionic bond
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What does the second law of thermodynamics states that the ______ of universe is always increasing |
entropy
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Is a molecule of CO2 in which to polar bonds point symmetrically in opposite directions polar or nonpolar |
nonpolar
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What is the speed of light in a vacuum |
3.00 x 10 to the 8th m/s
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A solid his particles are characterized by a regular repeating three-dimensional pattern is called a what |
solid Crystalline
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Adams that are of the same element that differ in the number of particles in the nucleus are called |
Isotopes
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Connecticut energy is associated with an objects |
Motion or movement
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What is the simplest repeating units in the Crystal |
Unit cell
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Which of the three main particles that compose the Atom has a negative charge |
Electron
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name PCI5 |
phosphorus pentachloride
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What term refers to a bonding situation in which electrons are shared by more than two Atoms |
Delocalization
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Which type of chemical formula is the simplest ratio of atoms in a compound |
Empirical
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What is the formula for sodium sulfate |
Na2SO4
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How long is 2.54 cm |
25.4 mm
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In what category are the elements fluoride bromine and iodine |
Halogens
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In what category are the elements magnesium calcium and barium |
Alkaline earth metals
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What type of geometry does acetone CH2O in which three bonding pairs of electrons are arrayed around the Central Adam have |
trigonal planar
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Which of the following elements would you expect to have the greatest electronegativity |
CL
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What type of reaction is Zn(s) + 2 HCl(s) H2(g) + ZnCl2 (aq) |
single displacement reaction
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in what category are the elements boron, silicon and germanium |
semimetals
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In the production of the metal part molten steel and it's melting point is poured into a mold and allowed to solidify what quantities is involved in this process |
Heat of fusion
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What type of geometry does hydrogen sillimanite which has two bonding pairs and to nonbonding pairs of electrons around the Central Adam have |
angular
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The first law of thermodynamics relates change in internal energy to |
heat and work
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The quantum theory of light states that |
Light has electromagnetic waves traveling in bundles or packets of energy
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The mass of the substance per unit of volume is called |
Density
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A theoretical gas that exactly the bases substance of the kinetic theory would be called a what gas |
Ideal
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The outmost electrons in an atom, which are involved in chemical bonding are called |
valence electrons
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The face-centered arrangement of atoms in a crystal |
has the least empty space of any cubic arrangement
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Relatively strong force that exist between molecules that contain hydrogen covalently bonded to a highly electronegative Atom |
Hydrogen bond
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Moderately strong force that exist between neighboring polar molecules due to the attraction of oppositely charged ends |
Dipole-dipole force
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Wake force that exist between all molecules both pole polar and nonpolar due to the formation of instantaneous dipoles |
London force
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The strongest intermolecular forces affecting the element iodine |
London force
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The strongest intermolecular forces affecting the compound dichloromethane |
dipole-dipole force
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