A Long Time Ago
An ionic compound contains...
A metal and a nonmetal
Identify what is wrong with this statement and then correct it.
The compound RaO would be named Radon Oxide.
Ra stands for Radium, not Radon.
Therefore, the name of the compound would be Radium Oxide.
What is the value for the speed of light? (c)
3.0 x 10^8 meters per second
In our flame lab, what was the source of energy for the electron to enter its excited state?
the heat from the flame (thermal energy)
Which elements will never have an electron configuration that contains 2s or beyond?
Hydrogen and Helium
A covalent compound contains...
Two or more nonmetals
Identify what is wrong with this statement and then correct it.
The balanced chemical formula for Aluminum Iodide is Al3I
The balanced chemical formula would be AlI3
What is the value for Planck's constant? (h)
6.626 x 10^-34 Joules per second
Which relative wavelength in nanometers would you expect the sodium chloride from our flame test lab to have, and why?
An orange-yellow flame was produced by sodium chloride in the flame test lab. Therefore, according to the electromagnetic spectrum, an estimated wavelength of 590-610 nanometers would be associated with this flame.
Which orbitals must be completely filled prior to opening the 4p orbital?
1s 2s 2p 3s 3p 4s 3d
The Roman Numeral that follows transition metals in a compound's name represents...
the charge on the transition metal
Identify what is wrong with this statement and then correct it.
Since wavelength decreases as frequency increases, this would be classified as a direct relationship.
Since wavelength decreases as frequency increases, this would be classified as an inverse relationship.
Find the energy of a wave with a wavelength of 5x10^-7 meters.
3.97 x 10^-19 joules
Explain why Lithium Chloride in our flame lab produced a low energy red flame.
Lithium does not have a high number of electron levels open. Therefore, the electron that is moving from a ground state to an excited state does not have a far distance to travel, requiring less energy and emitting less energetic light when returning.
Technetium would be represented by the abbreviated electron configuration...
[Kr] 5s2 4d5
Explain why metals always form a positive charge.
Metals lose electrons from their outermost shells to nonmetals during bonding. The loss of negatively-charged electrons will create a positive net charge.
Identify what is wrong with this statement and then correct it.
The abbreviated electron configuration for Molybdenum would be [Ar] 5s2 4d4
The abbreviated electron configuration for Molybdenum would be [Kr] 5s2 4d4
Find the frequency of a wave that has a wavelength of 260 nanometers.
Nm to m is x 10^-9
1.15 x 10^15 hertz
Pretend that during a flame test, you noticed that a dark blue flame was produced by the burned salt. What might this tell you about the elements present in the salt?
The metal present in the salt would contain a high number of energy levels which means that the electrons need more energy to travel farther distances.
Uranium
Explain why nonmetals always form a negative charge.
Nonmetals gain electrons from metals in their outermost shell to fill it to capacity and therefore gaining negatively-charged particles makes the net charge more negative.
Identify what is wrong with this statement and then correct it.
Polyatomic ions are a group of metal cations that have a collective positive charge except for acetate which is the only negatively charged polyatomic ion.
Polyatomic ions are a group of nonmetal anions that have a collective negative charge except for ammonium which is the only positively charged polyatomic ion.
What would the wavelength be of a wave that has a frequency of 9.9 x 10^10 hz?
0.003 meters
Describe what happens throughout the journey of an electron as it goes from its ground state, to its excited state, back to its ground state.
Ground state --> gains energy --> excited state (jumps to a higher energy level) --> releases energy in the form of a photon --> ground state (falls back to a lower energy level / original position)
Provide the full electron configuration for Berkelium.
1s2 2s2 2p6 3s3 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 4f15 5d9 6p6 7s2 5f9