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30 Cards in this Set

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A conversion factor that relates the number of moles of two compounds derived from the coefficients in an equation
mole-mole factor
The loss of electrons by a substance. Biological oxidation may involve the addition of oxygen, or the loss of another reactant.
oxidation-reduction reaction
A change in which the physical appearance of a substance changes but the chemical composition stays the same.
physical change
The substances formed as a result of a chemical reaction.
reactants
The gain of electrons by a substance. Biological reduction may involve the loss of oxygen or the gain of hydrogen.
reduction
An element replaces a different element ina compound.
single replacement reaction
2 or more elements or compounds combine together to form one product
combination reactions
a reactant splits into 2 or more simpler products
decomposition reaction
a reacting element switches place with an element in the other reacting compound
single replacement
positive ions in the reacting compounds switch places
double replacemt
burning a log or fuel ina car are examples. - fuel and oxygen are required and often the reaction produces co2, h2o, and heat
Combustion reactions
mole relationships in chemical equations. Balanced equations can be interpreted in terms of_______.
moles
What change occurs when the atoms of the initial substances rearrange to form new substances.When new substances form, a chemical reaction has taken place.
chemical changes
what shows the formulas of the substances that react on the left side of a reaction arrow and the products that form on the right side of the reaction arrow. An equation is balanced by writing the smallest whole number(coefficients) in front of formulas to equalize the atoms of each element in the reactants and the products.
Chemical equations
Name the tupes of reactions
Many chemical reactions can be organized by reaction type:
Combination, decomposition, single replacement, or double replacement.
When electrons are transferred in a reaction, it is an_____ ______ ______
One reactant loses electrons, and another reactant gains electrons. Overall, the number of electrons lost and gained is equal.
oxidation-reduction reaction.
What is one mole of an element contains_______ atoms and a mole of aompound contains _________ molecules or formula units.
6.02x10 to the 23rd power of atoms
6.02x 10 to the 23rd power of molecules
The_____ _____ (g/mole)of any substance is the mass in grams equal numerically to its atomic mass, or the sum of the atomic masses, which have been multiplied by their subscripts in a formula.It becomes a conversion factor when it is used to change a quantity in grams to moles, or to change a given number of moles to grams.
molar mass
the loss of electrons is an ______.We say that calcium was oxidized. At the same time, the sulfur atom electrons.
oxidation
This gain of electrons is called_________.We say that sulfur was reduced.The two parts must occur simultaneously and with the same total number of electrons.
reduction
burning a log or fuel ina car are examples. - fuel and oxygen are required and often the reaction produces co2, h2o, and heat
Combustion reactions
mole relationships in chemical equations. Balanced equations can be interpreted in terms of_______.
moles
What change occurs when the atoms of the initial substances rearrange to form new substances.When new substances form, a chemical reaction has taken place.
chemical changes
what shows the formulas of the substances that react on the left side of a reaction arrow and the products that form on the right side of the reaction arrow. An equation is balanced by writing the smallest whole number(coefficients) in front of formulas to equalize the atoms of each element in the reactants and the products.
Chemical equations
Name the tupes of reactions
Many chemical reactions can be organized by reaction type:
Combination, decomposition, single replacement, or double replacement.
When electrons are transferred in a reaction, it is an_____ ______ ______
One reactant loses electrons, and another reactant gains electrons. Overall, the number of electrons lost and gained is equal.
oxidation-reduction reaction.
What is one mole of an element contains_______ atoms and a mole of aompound contains _________ molecules or formula units.
6.02x10 to the 23rd power of atoms
6.02x 10 to the 23rd power of molecules
The_____ _____ (g/mole)of any substance is the mass in grams equal numerically to its atomic mass, or the sum of the atomic masses, which have been multiplied by their subscripts in a formula.It becomes a conversion factor when it is used to change a quantity in grams to moles, or to change a given number of moles to grams.
molar mass
the loss of electrons is an ______.We say that calcium was oxidized. At the same time, the sulfur atom electrons.
oxidation
This gain of electrons is called_________.We say that sulfur was reduced.The two parts must occur simultaneously and with the same total number of electrons.
reduction