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Molecular Formulas
Vocabulary
Subatomic Particles
Isotope You So
Periodic Table
100
the number of different atoms in HKNO3
What is 4?
100
Two atoms of the same element are bonded together
What is a diatomic element?
100
These subatomic particles have nearly no mass compared to the other two.
What are the electrons?
100
This is the number of neutrons in Li-8
What is 5?
100
The vertical columns of the periodic table
What are groups of families?
200
The number of oxygen atoms present in Fe(C2O4)6V(H2O)4
What is 28?
200
When two or more different elements are bonded together, this is formed.
What is a compound?
200
Isotopes have different numbers of these subatomic particles.
What are neutrons?
200
Isotopes have the same number of these subatomic particles
What are protons and electrons?
200
the inert gases on the periodic table with complete octet valence shells
What are the noble gases?
300
The empirical formula of K4C16O8
What is KC4O2?
300
This is composed of two or more different substances that can be separated by physical means.
What is a mixture?
300
The number of these subatomic particles is varies for the creation of ions
What are the electrons?
300
This is the most stable proton : neutron ratio; deviation from this makes atomic nuclei radioactive.
What is 1 : 1?
300
The elements of the second group
What are the alkaline-earth metals?
400
This is the percentage of mass due to a certain element in a molecule.
What is percent composition?
400
This group of mixtures includes alloys and solutions (when 1 thing is dissolved in another).
What are homogeneous mixtures?
400
The number of this subatomic particle identifies the type of element that an atom is.
What is the proton?
400
The number in H-3 represents this, which gives the number of what?
What is the mass number, giving number of protons and neutrons?
400
Columns 3 - 12 on the periodic table
What are the transition metals?
500
The name of the scientist who discovered the electron using a cathode ray tube?
Who is J J Thompson?
500
These types of properties include melting point and density.
What are physical properties?
500
This is the atomic symbol for the Li-8 atom
What is 8 Li 3
500
The atomic mass on the periodic table is a decimal value because it is actually this (be specific, please)
What is a weighted average?
500
This is the guy who developed the arrangement of the periodic table
Who is Demetri Mendeleev!