1.3 Flashcards
Periodicity
Periodicity is a regular periodic variation of properties of elements with atomic number and position in the periodic table.
Period
A period is a horizontal row of elements in the periodic table.
Elements show trends in properties across a period.
Thermal decomposition
The breaking up of a chemical substance with heat into at least two chemical substances.
A displacement reaction
A reaction in which a more-reactive element displaces a less-reactive element from an aqueous solution of latter’s ions.
Disproportionation
Disproportionation is the oxidation sand reduction of the same element in a redox reaction
A precipitation reaction
The formation of a solid from a solution during a chemical reaction. Precipitates are often formed when two aqueous solutions are mixed.
