Chemical Reactions Flashcards
it alters the physical state of a substance without changing its composition
Physical change
It converts one substance into another; it involves breaking bonds in reactants and forming new bonds in the products.
Chemical change
Uses chemical formulas and other symbols showing what reactants are starting materials in a reaction and what products are formed
Chemical equation
They are written on the left
Reactants
They are written on the right
Products
It shows the number of molecules of a given element or compound that react or are formed.
Coefficients
States that atoms cannot be created or destroyed in a chemical reaction.
The law of conservation of mass
Are used to balance an equation
Coefficients
A balance equation has the ___________ of each element on both sides of the equation.
same number of atoms
Joining of two or more reactants to form a single product
combination reaction
Conversion of a single reactant to two or more products
Decomposition
One element replaces another element in a compound to form a different compound an element as products
single replacement
A reaction in which two compounds exchange parts atoms or ions to form two new compounds
Double replacement
Loss of electrons from atom
Oxidation
Gain of electrons by an atom
Reduction
Both process occur together in a single reaction is called an
Oxidation-reduction or redox
It has two components one that is oxidized and one that is reduced
Redox
It involves the transfer of electrons from one element to another
Redox
A compound that is oxidized while causing another compound to be reduced is called a _______
Reducing agent
A compound that is reduced while causing another compound to be oxidized is called an______
Oxidizing agent
It results in gain of oxygen atoms and loss of hydrogen atoms
Oxidation
It results in the loss of oxygen atoms and gain of hydrogen atoms
Reduction
A quantity that contains 6.02x10^23
Mole
It is the sum of atomic weights of all the atoms in a compound, reported in atomic mass units (amu).
Formula Weight
It is the mass of one mole of any substance, reported in grams per mole (g/mol).
Molar mass
The amount of product expected from a given amount of reactant based on the coefficients in the balanced chemical equations.
Theoretical yield
The amount of product isolated from a reaction
Actual yield
The reactant that is completely used up in a reaction
Limiting reactant
