©Jason McConnel 2025 ALL RIGHTS RESERVED.
ACS Gen Chem 1 Exam Study Guide.
Extensive Property - Answer✔Values that depend on how much you have
Intensive property - Answer✔Independent of size sample
Density - Answer✔Mass/volume
Homogeneous mixture - Answer✔Same throughout, indistinguishable parts
Heterogeneous - Answer✔Different parts, distinguishable parts
Diatomic elements - Answer✔N2, O2, H2, Cl2, Br2, I2
John dalton - Answer✔Founded the atomic theory
Thompson experiment - Answer✔Determine charge to mass ratio based on deflection or
attraction of particles
Rutherford experiment - Answer✔Particles shot through gold foil, atoms are mostly empty space
Millikan experiment - Answer✔Determined the magnitude of the charge on a single electron
Kinetic energy - Answer✔Energy of moving things
Potential energy - Answer✔Stored energy
Bohr model correct? - Answer✔No! It is fundamentally incorrect
Lattice energy stability - Answer✔The higher the charge the more stable it is if it is cancelled out
by another charge in the molecule
Atom - Answer✔Smallest piece of matter still discernible as a particular element
Element - Answer✔A specific kind of atom defined by the number of protons in the nucleus
Molecule - Answer✔Combo of two or more atoms
Isotope - Answer✔A particular atom of an element with potentially varying numbers of neutrons
Ion - Answer✔A once electrically neutral atom which has been changed by loss or gain of
electrons
Anion - Answer✔Negative ion
Cation - Answer✔Positive ion
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, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
Identifying an element - Answer✔Protons=atomic number
Electrons=atomic number
Neutrons=atomic mass minus number of protons
Avogadro's number - Answer✔6.022x10^23
Salts - Answer✔Ionic, metal and a non metal
Strong acids - Answer✔HCl, HBr, HI, HNO3, H2SO4, HClO4, HClO3
Ionic bonds - Answer✔MUST have a metal
Covalent bonds - Answer✔MUST have a poly atomic ion
Bond energy - Answer✔Energy needed to break a bond
Ionic bond (term) - Answer✔Negative and positive ions bond together to form a molecule
Covalent bond (term) - Answer✔Sharing of electrons
Polar covalent bond - Answer✔Bond between two different atoms with different electro
negativity
Nonpolar covalent bond - Answer✔Bond between two atoms that are the same with the same
electronegativity
Isoelectronic series - Answer✔Ions with the same number of electrons
Exothermic - Answer✔Negative
Endothermic - Answer✔Positive
Linear angle - Answer✔180
Trigonal planar angle - Answer✔120
Tetrahedral angle - Answer✔109.5
Trigonal bipyramidal - Answer✔90, 120
Octahedral angle - Answer✔90
Louis de Broglic - Answer✔Particles can have wave nature in a way analogous to how EM
waves have particle nature
Quantum Numbers - Answer✔L= 0,1,2,3,4...
N= L+1
Ml= -L...+L (not zero)
Mchange= 1/2 or -1/2
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ACS Gen Chem 1 Exam Study Guide.
Extensive Property - Answer✔Values that depend on how much you have
Intensive property - Answer✔Independent of size sample
Density - Answer✔Mass/volume
Homogeneous mixture - Answer✔Same throughout, indistinguishable parts
Heterogeneous - Answer✔Different parts, distinguishable parts
Diatomic elements - Answer✔N2, O2, H2, Cl2, Br2, I2
John dalton - Answer✔Founded the atomic theory
Thompson experiment - Answer✔Determine charge to mass ratio based on deflection or
attraction of particles
Rutherford experiment - Answer✔Particles shot through gold foil, atoms are mostly empty space
Millikan experiment - Answer✔Determined the magnitude of the charge on a single electron
Kinetic energy - Answer✔Energy of moving things
Potential energy - Answer✔Stored energy
Bohr model correct? - Answer✔No! It is fundamentally incorrect
Lattice energy stability - Answer✔The higher the charge the more stable it is if it is cancelled out
by another charge in the molecule
Atom - Answer✔Smallest piece of matter still discernible as a particular element
Element - Answer✔A specific kind of atom defined by the number of protons in the nucleus
Molecule - Answer✔Combo of two or more atoms
Isotope - Answer✔A particular atom of an element with potentially varying numbers of neutrons
Ion - Answer✔A once electrically neutral atom which has been changed by loss or gain of
electrons
Anion - Answer✔Negative ion
Cation - Answer✔Positive ion
1|Page
, ©Jason McConnel 2025 ALL RIGHTS RESERVED.
Identifying an element - Answer✔Protons=atomic number
Electrons=atomic number
Neutrons=atomic mass minus number of protons
Avogadro's number - Answer✔6.022x10^23
Salts - Answer✔Ionic, metal and a non metal
Strong acids - Answer✔HCl, HBr, HI, HNO3, H2SO4, HClO4, HClO3
Ionic bonds - Answer✔MUST have a metal
Covalent bonds - Answer✔MUST have a poly atomic ion
Bond energy - Answer✔Energy needed to break a bond
Ionic bond (term) - Answer✔Negative and positive ions bond together to form a molecule
Covalent bond (term) - Answer✔Sharing of electrons
Polar covalent bond - Answer✔Bond between two different atoms with different electro
negativity
Nonpolar covalent bond - Answer✔Bond between two atoms that are the same with the same
electronegativity
Isoelectronic series - Answer✔Ions with the same number of electrons
Exothermic - Answer✔Negative
Endothermic - Answer✔Positive
Linear angle - Answer✔180
Trigonal planar angle - Answer✔120
Tetrahedral angle - Answer✔109.5
Trigonal bipyramidal - Answer✔90, 120
Octahedral angle - Answer✔90
Louis de Broglic - Answer✔Particles can have wave nature in a way analogous to how EM
waves have particle nature
Quantum Numbers - Answer✔L= 0,1,2,3,4...
N= L+1
Ml= -L...+L (not zero)
Mchange= 1/2 or -1/2
2|Page
