Atomic Theory
Atomic Structure
The Periodic Table
Bonding
Names & Formulas
100
The particle discovered by JJ Thomson's cathode ray experiment.
What is the electron?
100
A value determined by adding the number of protons to the number of neutrons in an atom.
What is the mass number?
100
The family name for group 18 elements.
What are the noble gases?
100
This type of bond usually forms when a metal transfers electrons to a nonmetal.
What is an ionic bond.
100
A type of compound that does not use prefixes in its nomenclature.
What are covalent compounds?
200
J. J. Thomson's model of the atom which included negatively charged particles in a positively charged matrix.
What is the Plum Pudding Model?
200
The maximum number of electrons in the first principal energy level.
What is 2?
200
The names of the 7 diatomic elements.
What are hydrogen, nitrogen, oxygen, fluorine, chlorine, bromine, and iodine?
200
The charge of a strontium cation.
What is 2+?
200
The formula for this compound is N2O
What is dinitrogen monoxide?
300
The location of electrons in the modern quantum mechanical model of the atom.
What is the electron cloud?
300
Atoms that have the same number of protons but a different number of neutrons.
What are isotopes?
300
Elements in the same group/family share similar properties because they have the same number of these.
What are valence electrons?
300
A bond type formed between atoms with similar electronegativities.
What is a covalent bond?
300
The formula for calcium nitrate
What is Ca(NO3)2?
400
The claim about atomic structure supported by the majority of alpha particles passing straight through Ernest Rutherford's gold foil.
What is the majority of an atom's volume is empty space?
400
The noble gas electron configuration for sulfur.
What is [Ne]3s23p4?
400
Electronegativity of elements increases in these directions on the periodic table.
What are across periods (L to R) and up groups (B to T)?
400
This model of metallic bonding explains why metals can conduct electricity and be hammered into different shapes without breaking.
What is the sea of mobile valence electrons?
400
The name of the compound with the formula Fe2O3.
What is iron (III) oxide?
500
Rutherford concluded that atoms contain a small, dense, positively charged nucleus because of this surprising evidence from the gold foil experiment.
What is that some alpha particles were deflected, and a few bounced back?
500
This is the average atomic mass of element X if 75.0% of its atoms have a mass of 10.0 amu and 25.0% have a mass of 11.0 amu.
What is 10.25 amu?
500
According to Coulomb’s law, this explains why atoms generally get smaller from left to right across a period.
What is adding protons increases the charge of the nucleus, therefore increasing the force with which valence electrons are attracted to the nucleus.
500
Three molecular substances have the following melting points:
X: −182°C Y: 17°C Z: −78°C
This ranking correctly orders the substances from weakest to strongest intermolecular forces.
What is X, Z, Y?
500
The chemical formula for tin (IV) pentahydrate.
What is SnCl4•5H2O?