Equilibria Factors affecting chemical equilibria In chemistry, equilibrium refers to chemical reactions that are in balance. The sign
Category: GCE A-level Chemistry
Reaction kinetics
Reaction kinetics Simple rate equations The rates of chemical reactions are affected by three main conditions: • temperature • concentration
Periodic table
Periodic table
The Periodic Table: chemical periodicity
The Periodic Table: chemical periodicity This section on the Periodic Table and chemical periodicity builds on work covered
Group 7 elements
Characteristic physical properties Group 17 – the halogens – consists of reactive non-metals, all of which exist as
Nitrogen and sulfur
Nitrogen Lack of reactivity You know that nitrogen is an unreactive gas because it is mixed with reactive
Group 2 elements
Physical properties of the Group 2 elements Some of the most useful physical properties of the Group 2
Electrophilic Substitution Reactions with Substituted Benzenes
Electrophilic Substitution Reactions with Substituted Benzenes Substituted benzenes undergo the electrophilic aromatic substitution reactions such as halogenation, nitration,
Electrophilic Substitution Reactions of benzene
Electrophilic Substitution Reactions The π-bond electrons in benzenes attack a strong electrophile and lose its aromaticity to give