Chemistry Terms Ch 4 Flashcards
Chemical equation
A symbolic representation of a chemical reaction
Reactants
The substance that react
Product’s
Substances produced in a reaction
Law of conservation of mass
Adams are not created or destroyed in chemical reactions, only rearranged.
The sum of the masses of the products is always equal to the sum of the masses of the reactants
(l) In a formula =
Liquid
(s) =
Solid
(g) =
Gas
(aq) =
Aqueous (water) solution. In a water solution
Stoichiometry
To measure elements
The Numerical relationship between elements and compounds
Chemical equation
Symbolic representation of a chemical reaction
What are the seven diatomic elements
H, N, O, F, Cl, Br, I.
Combination reaction or
synthesis reaction
A reaction in which two or more substances chemically combined to form a new substance. Just one product
Synthesis reaction formula
A + B —-> AB
Decomposition reaction
Involves the breakdown of a single reactant compound into two or more simple substances either elements or compounds
AB —> A+B
Electrolysis
Decomposition due to electrical current
Thermal decomposition
Decomposition due to heat
Single displacement reactions
The Involvement of replacing one element in a compound with another
A + BC —-> AC + B
What are the names of the reactions when he is either released or absorbed
Endothermic exothermic Reactions
What are the four types of reactions that produce different types of combinations of atoms
Combinatio,n decomposition, single displacement and double displacement
Synthesis
To combined
Limited reactant
The reaction that determines how much product is formed
Decant
To pour off excess liquid and leave only the precipitant
What is an acetone rinse
It helps to evaporate the water
Spectator ions
Ions that refuse to react
