bonding
what is a covalent bond
the sharing of nonmetal electrons
what are some other ways to say what one mole is
. avogadro's #
. 6.02x10^23
. 22.4 liters of water
define reactant and product
reactant: starting substance in a chemical equation
product: substance formed in a chemical equation
what do coefficients represent in a chemical reaction?
the represent moles, liters, molecules
define representative particle
the smallest unit into which a substance can be broken down without changing in composition, usually atoms molecules or ions
what is an ionic bond
the TRANSFERING of electrons between nonmetals AND metals
define molar mass
mass of a mole of any substance
define double displacement
two compounds combine to form two new ionic bonds
what is a mole ratio
a ratio or conversion factor used in stoichiometry that is determined by the coefficients of a balanced equation
what is STP
the conditions under which the volume of gas is usually measured
what is the difference between ionic and covalent bonds
one is the sharing of nonmetals only and the other is transferring of both metals and nonmetals
how many moles are in 64 grams of oxygen gas, O2? SHOW WORK
2 moles of O2
what is a chemical reaction?
a change in a substance into another by rearrangement of atoms
what is conserved in a chemical reaction
atoms, mass, energy
chemical formula
shows the numbers and types of atoms present in a substance
what is the difference between polar and non-polar
polar covalent bonds are not equal on both sides while non-polar covalent bonds are equal on both sides.
calculate the molar mass of the following compound
C6H12O6
90 g/mol
what is the difference between synthesis and decompositions
synthesis is the combination of two different molecules while decomposition is the break down of compounds
what is the molar mass of CO2
14.0 g/mol
skeleton equation
a chemical equation that does not indicate the relative amounts of reactants and products
how many electrons are shared in a double bond
four electrons (two for each bond)
what is the percent composition
the percent by mass of each element in a compound
what is the law of conservation of mass and how does it apply to chemical equations
matter can neither be created nor destroyed, therefore in an equation, what comes in comes out.
where is the excess reagent located on the chart
the second chart to the left
define limiting reagent
the substance that controls the quantity of a product that can be formed in a chemical reaction used up completely