Topic 4 (allery Chemistry) Flashcards
Thermal decomposition of Group 2 carbonates
Group 2 carbonates decompose upon heating to form metal oxides and carbon dioxide.
Reaction of Group 2 metals with chlorine
Group 2 metals react with chlorine to form metal chlorides, with magnesium being oxidized and chlorine being reduced.
General pattern of Group 2 metal reactions with acids
Group 2 metals react with acids to form salts and water, consistent with the acid-base neutralization reaction.
Electronegativity changes in Group 2 elements
Electronegativity generally decreases down Group 2 due to increased atomic size and shielding.
Characteristics of Group 2 metal oxides
Group 2 metal oxides are generally white solids and act as bases when reacted with acids.
State symbols in chemical reactions
State symbols indicate the physical state of reactants and products, affecting reaction interpretation.
Ionization energy trend in Group 2 elements
The first ionization energy decreases down Group 2 because increased shielding and distance from the nucleus weaken the attraction to outer electrons.
Neutralization reactions of Group 2 oxides
Group 2 oxides react with acids to form salts and water, following the general reaction pattern of acid plus base equals salt plus water.
Hydroxide solubility comparison in Group 2
Hydroxides of Group 2 elements show an increasing solubility trend down the group, contrasting with sulfate solubility.
