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73 Cards in this Set
- Front
- Back
What quantum number determines the orbital in a subshell that might be occupied by an electron?
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ml
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What part of the atom defines an atom?
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electrons
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A piece of indium with a mass of 16.6g is submerged in 46.3 cm3 of water in a graduated cylinder. The water level increases to 48.6 cm3. What is the density of indium?
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7.2 g/cm3
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These types of elements are either brittle solids or gases
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nonmetals
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Which property generally decreases across the period table?
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Atomic Radius
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density formula
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mass/volume (g/mL)
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How many orbitals make up the 4P subshell?
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3
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2 samples have the same # of protons but different # of neutrons. What are they to each other?
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isotopes
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The state of matter for an object that has a definite volume but not a definite shape is....?
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liquid state
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Elements that have a full energy level are considered?
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noble gases
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Under normal conditions, halogens are what in their elemental form?
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diatomic
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mass
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volume x density
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What quantum numbers are the properties of an atomic orbital?
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size, shape, orientation
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Rutherford's gold-foil experiment demonstrated that...?
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most of the atom is empty space
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Which property is "decomposes into uranium and fluorine gas"?
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chemical
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Elements that have their outer electrons in the same energy level are in the same?
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period
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How many horizontal rows of elements in the periodic table and what are they called?
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seven, periods
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volume
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mass/density
(mass/1)x(1mL/mass) #g = 1 mL |
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What does the 3 in the 3d6 represent?
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energy level
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In Rutherford's experiments, the alpha particles bounced back at the experimenters gave evidence of an atom's.....?
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nucleus
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The boiling point of water is a ... change because....?
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physical change; the gaseous water is chemically the same as the liquid
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Elements have are shiny, ductile and conduct electricity are
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metals
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all elements in the same group have the same number of what?
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valence electrons
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Does the sublevel 2d exist?
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no
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The plum pudding model of the atom created by Thomson states that....?
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atoms are made up of positively charged particles with negatively charged particles embedded in the positively charged particles
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food coloring added to mashed potatoes is an example of a ....
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physical change
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Elements that conduct electricity at high temperatures
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Metalloids
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The amount of energy needed to remove an electron from an isolated gaseous atom is known as the what?
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ionization energy
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In whose model do electrons reside in energy levels?
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Bohr's
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Who was credited with the discovery of the electron as a result of work with cathode rays?
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Thomson
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substances with constant composition that can be broken down into elements by chemical process
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compounds
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Elements that have the same ending electron configuration and have similar properties are in the same?
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family/group
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Electronegativity is an atom's ability to what?
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attract electrons to itself
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Which principle states that two electrons that reside in the same orbital must have the opposite spin?
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Pauli's exclusion
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What is true about subatomic particles?
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The mass of a neutron nearly equals the mass of a proton
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filtration is the most effective way to physically separate
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mixture of liquid and non-dissolving solid
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In what section of the periodic table is the 4f subshell being filled?
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lanthanides
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Only two electrons are allowed in an orbital is part of which rule?
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Pauli's exlusion
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The average atomic mass of an element depends upon...?
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mass and relative abundance of each isotope of that element
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a solution, like salt water, is also called a
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homogeneous mixture
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Who was recognized for developing the modern periodic table because of his prediction of undiscovered elemental properties?
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Mendeleev
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Hund's rule states what?
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electrons must spread out with one electron in every orbital before pairing up
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As a consequence of the discovery of the nucleus by Rutherford, which model of the atom is thought to be true?
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Electrons are distributed around the nucleus and occupy almost all the volume of the atom
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the classic definition of matter includes
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mass and volume
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This person developed the Law of Chemical Periodicity
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Moseley
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Electrons must fill lower energy levels first is part of whose rule?
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Aufbau's
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air is a ....
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homogeneous mixture
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What does the Law of Chemical Periodicity state?
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Properties of elements are a function of their atomic number
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Deboglie states that electrons act as both a what and a what?
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particle and wave
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table salt is a ....
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pure compound
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Who was one of the first people to organize elements based on their properties? He tried to group elements together in triads.
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Dobereiner
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lead piping is a....
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pure element
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Who developed the first trans-uranic elements? He discovered the lanthanide and actrinide series of the periodic table
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Seaborg
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nitrogen gas is a .....
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pure element
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oreo cookies are a ....
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heterogeneous mixture
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sugar water is a ....
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homogeneous mixture
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an oatmeal raisin cookie is a ...
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heterogeneous mixture
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copper wiring is a ...
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pure element
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carbon dioxide is a....
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pure compound
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oxygen gas is a....
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pure element
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sugar is a....
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homogeneous mixture
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flammability (property?)
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chemical property
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chlorine is a green gas (property?)
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physical property
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boiling point of water is 100.0 C (property?)
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physical property
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acids produce hydrogen gas when in contact with metals (property?)
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chemical property
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oils are not soluble in water (property?)
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physical property
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metals rust in the presence of water (property?)
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chemical property
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Which technique needs to be used to separate water from a precipitate that was created from 2 soluble substances?
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filtration
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Which technique needs to be used to separate salt from water?
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evaporation
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monoatomic ion
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ion with 1 atom
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polyatomic ion
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ion with more than 1 atom
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cation
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ion with a positive charge
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anion
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ion with a negative charge
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