protons + neutrons = (A/Z)?
protons equals (A/Z)
A is the ___ number.
Isotope is decided by number of _____.
A molecule is identified by its number of ____.
Atomic mass units.
Atomic mass given in what units?
Atomic weight also called ___ ___.
The number of atoms in an element is 6.022x10^23, also called the number of ____.
24g of carbon is how many moles of it?
Each horizontal row in the periodic table is a ___.
Each column in the periodic table is a ___ or a ___.
nonmetals, metalloids, metals
Periodic table has what three groups of atoms?
Do metals tend to lose electrons?
Metals typically form ____ oxides.
Nonmetals have ___ melting points than metals.
Nonmetals form ____ oxides.
Which column has the alkali metals?
Which column has the alkali earth metals?
What group has soft, metallic solids that have low densities and low melting points? They form 1+ cations.
What group is harder, more dense, and melts at higher temperatures? They form 2+ cations.
What group can form covalent bonds with nonmetals and all but C can form two additional bonds with Lewis bases.
Any substance that can donate a pair of nonbonding electrons.
This group can form 3 covalent bonds. All except N can form 5 covalent bonds using their d orbitals.
This group is called the chalcogens.
This group has the halogens.
Noble gases are sometimes called ____ gases.
Large atoms make (wea/strong) pi bonds.
Metals form ___; nonmetals form ____.
Cations are usually ___ than the original atoms while anions are usually ____.
effective nuclear charge
The net positive charge experienced by an electron in a multi-electron atom.
Effective nuclear charge is in what units?
The energy necessary to detach an electron from a nucleus.
second ionization energy
The energy required to remove a second electron is called the ____.
left to right
Ionization energy generally increases from _____ and bottom to top.
The tendency of an atom to attract an electron in a bond that it shares with another atom.
Electronegativity is measured with the: _____.
SI unit of mass?
SI unit of length?
SI unit of time
SI unit of electricity?
SI unit of temperature?
SI unit of Luminous intensity?
SI unit for amount of substance?
SI units for pressure
Atoms are held together by ___.
A form of chemical bonding that is characterized by the sharing of pairs of electrons between atoms.
The point where energy level is the lowest between two bonded atoms.
The energy needed to split two atoms; to bring their energy to zero between them.
___ energy is released by breaking a bond.
Substance made of 2+ elements.
The simplest positive integer ratio of atoms of each element present in a compound.
An electrically neutral group of two or more atoms held together by covalent chemical bonds.
A way of expressing information about the atoms that constitute a particular chemical compound.
percent by mass
What are you finding when you take the percents of an unknown, turn it to 100g, and divide by g/mol.
These are named after their cation or anion.
These follow the alphabetical names of things like copper 1+, 2+, etc.
This suffix for a greater ionic charge.
This suffix for a lesser ionic charge.
Lesser oxygens, like nitrite. (NO2)
More oxygen, like nitrate (NO3)
Prefix for few oxygens.
Prefix for many oxygens.
Acid naming based on ____.
binary molecular compounds
In 2 element compounds, AKA ____, naming begins with the name of the element that is farthest to the left and lowest in the periodic table.
The reaction that undrgoes physical change but not a molecular one.
The reaction that undergoes molecular formula change.
Type of reaction (physical/chemical): melting
Type of reaction (physical/chemical): evaporation
Type of reaction (physical/chemical): dissolution
Type of reaction (physical/chemical): rotation of polarized light
The process of dissolving a solid substance into a solvent to make a solution
Type of reaction (physical/chemical): combustion
Type of reaction (physical/chemical): redox
Type of reaction (physical/chemical): metathesis
A bimolecular process involving the exchange of bonds between the two reacting chemical species.
Equations on the MCAT (will/will not) be balanced.
runs to completion
When a reaction fully uses up at least one reactant.
Do most reactions run to completion? If not, because of what?
The state in which the concentrations of the reactants and products have no net change over time.
The substance which is totally consumed when the chemical reaction is complete.
The amount of product you get if a reaction runs to completion.
The amount of product you get from running an experiment.
Reaction type?: A + B -> C
Reaction type?: C -> A + B
Reaction type?: AB + C -> AC + B
These are often written above reaction arrows.
A (longer/shorter) arrow in an equilibrium reaction means that there will be more of this side than the other.
The ___ arrow in a reaction means it will reach equilibrium.
A solid material whose constituent atoms, molecules, or ions are arranged in an orderly, repeating pattern.
A solid that lacks the long-range order characteristic of a crystal.
ionic, network covalent, metallic, molecular
A crystal can be these types: (4).
Can some substances be crystalline or amorphous?
Solids with repeated structural units (amorphous and crystalline).
(Faster/Slower) cooling will more likely make something crystalline.