Chemical reactions Flashcards
Define a Combination reaction
A combination reaction is a reaction in which two or more substances combine to form a single new substance
Define a Decomposition reaction
A decomposition is a reaction in which a compound breaks down into two or more simpler substances
Define Catalytic decomposition
Catalytic decomposition is when a decomposition reaction occurs with the aid of a catalyst
Define Thermal decomposition
Thermal decomposition is a chemical reaction where heat is a reactant.
Define a precipitation reaction
a precipitation reaction is a chemical reaction occurring in an aqueous solution where two ionic bonds combine, resulting in the formation of an insoluable salt (precipitate)
Define ionic bonding
An ionic bond involves a metal that transfers one or more electrons to a nonmetal
define covalent bonding
A Covalent bond is a chemical bond that involves sharing electrons to form electron pairs between atoms
what is the word equation for metal hydroxide?
Metal hydroxide ==> metal oxide + water
what is the word equation for metal carbonate?
Metal carbonate ==> metal oxide + carbon dioxide
what is the word equation for metal hydrogen carbonate?
Metal hydrogen carbonate ==> metal carbonate + carbon dioxide + water
Describe the test for carbon dioxide ( Limewater)
When carbon dioxide is bubbled through limewater this made the limewater go milky
Describe the test for water ( cobalt chloride paper)
The paper will turn from blue to pink in the presence of water
what is the word equation for hydrogen peroxide?
hydrogen peroxide ==> oxygen + water
Define a catalyst
a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change.
why does a precipitate form in a precipitation reaction
Whether or not a precipitate occurs can be determined by using the solubility rules for common ionic solids.
