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Abeka 11th grade Chemistry Test 5

Terms in this set (54)

photons
what are individual packets of light energy
strenght
what can be the amplitude of a wave be considered a measure of
increase
if the wavelength of light DECREASES how must the frequency change
electromagnetic waves and photons
what does light consist of
dmitri mendeleev
who developed the periodic table of elements
8
what is the maximum number of valence electrons an atom may have
hertz
what unit is wave frequency usually measured in
photons emitted as electrons drop from higher to lower energy levels
what do the lines in the hydrogen spectrum represent
alkaline earth metals
elements that usually exist as 2+ ions
orbital orientation
what does the magnetic quantum number describe
electron shell
what does the principal quantum number describe
ground state
what is the lowest energy state of an atom called
alkali
elements in column 1
alkaline earth
elements in column 2
halogens
elements in column 17
noble gases
elements in column 18
main group
elements in column 1,2, and 13-18 of the periodic table are all classified as (?) elements
argon
element from a group that rarely undergo chemical reactions
BeBr2
what is the probable formula of the Bromide of Beryllium
nonmetals
category that includes Nitrogen, Oxygen, chlorine, and krypton
calcium
what is NOT an alkali metal
electron affinity
a chemist reacts chlorine gas with potassium to form potassium chloride which consists of K+ and Cl- ions what property is most important in this reaction
Na+
what ion would you expect to require the LEAT energy to form
Iodine
which of the following is a halogen
a) xenon b)iodine c)oxygen d)none
*
P
what is the correct Lewis symbol for phosphorus
3
how man valence electrons does boron have
electron configuration IDS which electron shells are completely filled
what best explains why knowing electron configuration is important in chemistry
transition metals
category that includes vanadium. platinum, and gold
spectrometer
astronomers can study the elemental composition of stars by observinf the spectrum of stars, what labaratory instrument would be used
F
what element would you expect to have the greatest electronegativity
[Ne]3s23p2
whta is the electron configuration of silicon
4
how many valence electrons does tin have
LiOH
what compound is the product of the reaction between Lithium and water
NF3
what is the probable formula of nirtogen
electron repulsion causes energy overlap between the electron shells
what best explains why the 4s orbitual fills before the 3d orbitual
S
which atom would you expect to be the smallest; Sr, Ge, S, Al
line
when an element is vaporized and heated in a flame or an electric arc, the light emitted forms a (?) spectrum
quantum
the theory that regards light as consisting of tiny "packets" of energy that have characteristics of both particles and waves is the ________ theory of light
crests
the high points of a wave are called (?)
electromagnetic spectrum
the arrangement of all forms of electromagnetic radiation is irder of frequency and wavelength is the (?)
3.00 x 10 to the eight power
the speed of light in a vacuum
troughs
the low pits of a wave
frequency
the number of complete waves that pass by a point in a given time are the wave's (?)
halogens
the group of elements reffered to as the "salt formers" because they continousely react with metals to form salts
group
elements in the same column of the periodic table belong to the same what
wavelength
the distance between two corresponding points on successive waves is called the (?)
Periodic Law
Oxygen and sulfur both form binary compounds with hydrogen: water and hydrogen sulfide. they also form the compounds methanol and methanethiol
hund's rule
an element will be attracted by a magnet if atoms of the element contain unpaired electrons. Oxygen atoms have four electrons in their 2p subshells and are weakly attracted by magnets
pauli's exclusion principal
each orbital in an atom can hold no more than two electrons; one with spin +1/2 and one with spin -1/2
aufbau's principle
a chemist is predicting the electron configuration of the elements flerovium by distrubuting electrons into orbitals until all electrons are used. he determines that the 6p subshell must be completely filled before any electronsare placed in the higher energy 7s subshell.
uncertainty principle
a scientist is measuring the monetum of electrons produced in a cathode-ray tube, however, she noticed that that the more accurately she determines the momentum of the electronsthe less sure she can be of their position
rutherford's model
Electrons are pictured as orbiting the nucleus in nonquantized circular orbits. this model was replaced because it requires electrons to continually radiate energy and spiral inward until they colide with the nucleus
Bohr's model
an electron is pictured as orbiting the nucleus in circular orbits with energy quantized. so only specific orbits are possible. was replaced because it can not be used for atoms with more than one electron
Born's model
electrons are pictured as moving unpredictably in orbitals, three-dimensional regions varying in shapes. the enrgy of the electrons is quantized to values corresponding with the orbitals present in the atom
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