Statistics for Chem Semester 1 Definitions Quiz

Click here to take the quiz!

General Stats
Answer Stats
Score Distribution
Your Score History

General Stats

This quiz has been taken 11 times
The average score is 16 of 50

Answer Stats

Hint	Answer	% Correct
-gain electrons in outer shells -expand to hold another electron -low effective nuclear charge -always larger than their parent atoms	Anions	100%
substances that cannot be broken down into simpler substances by ordinary means	Elements	100%
the ability to do work or causes change (can't see)	Energy	100%
-dont hold their shape -no interactions between particles -lots of empty space -highly compressible	Gas	100%
-dont hold their shape -particles not held as tightly as solids -particles very close together -incompressible	Liquid	100%
change in form, not substance, generally reversible	Physical change	100%
change in identity (and usually form) of a substance, generally irreversible	Chemical change	50%
substance composed of two or more different elements in a chemical combination.	Compound	50%
all elements are made of invisible, indivisible, eternal particles called atoms	Daltons Atomic Theory	50%
tendency for bonded atoms to attract bonding electrons	Electronegativity	50%
when an electron temporarily occupies an energy state greater than its ground state	Excited state	50%
due to wave-particle duality, it is fundamentally impossible to determine both the position and velocity of a particle at a given moment in time	Heisenberg uncertainty principle	50%
a physical combination of 2 or more pure substances that are not uniform in appearance	Heterogeneous mixture	50%
a physical combination of 2 or more pure substances that are uniform in appearance	Homogeneous mixture	50%
an unusually strong bond-dipole interaction that occurs only when H is bonded to N, O, or F	Hydrogen bond	50%
energy required to remove an electron from an isolated atom is the gas phase (cations)	Ionization energy	50%
anything that takes up space and has mass	Matter	50%
a physical combination of 2 or more pure substances	Mixture	50%
magnetic orientation	ml	50%
two or more atoms chemically combined	Molecule	50%
-principle quantum number -relative distance from nucleus -relative size of the region the electrons can be in -relative energy of electron	n	50%
massless particle of light energy	Photon	50%
determined using the senses	Physical property	50%
-hold their shape -particles stuck together -particles as close together as possible -incompressible	Solid	50%
3.00 x 10^8 m/s	Speed of light	50%
a wave that reinforces its own existence over time	Standing waves	50%
electrons ALWAYS occupy the lowest energy level first	Aufbau principle	0%
6.02x10^23	Avogadros Number	0%
difference in polarity between 2 atoms in a bond	Bond dipoles	0%
ability to undergo a chemical reaction	Chemical property	0%
multiple reactants -> single product	Composition Reaction	0%
two atoms share one or more pairs of valence electrons	Covalent bond	0%
single reactant -> multiple products	Decomposition Reaction	0%
when two elements are substitured for others in a compound	Double replacement reaction	0%
energy involved in adding an electron to an isolated atom in the gas phase (anions)	Electron affinity	0%
simplest whole number ratio of atoms by mole in a compound	Empirical formula	0%
more lines in spectrum than Bohr is able to observe	Fine line spectrum	0%
electrons will not spin-pair unless no empty orbitals of equal energy are available	Hunds rule	0%
electro static attraction between ions of opposite charge	Ionic bond	0%
subshell quantum number, shape of probability cloud	l	0%
when atoms combine chemically to form compounds, they do so in definite ratios, by mass	Law of definite composition	0%
vector sums of bond dipoles	Molecular dipoles	0%
all atoms held to each other by covalent bonds	Network covalent solid	0%
no two electrons have the same amount of quantum numbers, and it only applies to electrons	Pauli Exclusion Principle	0%
overlap of unhybridized orbitals perpendicular to the bond axis	pi bond	0%
6.62x10^-34	Plancks Constant	0%
a physical quantity that only has discrete values	Quantization	0%
overlap of orbitals along the bond axis	sigma bond	0%
when one element is substituted for another element in a compound	single replacement reaction	0%
shapes of molecules that can be explained by electrons repelling one another	VSEPR	0%