Redox reactions Part 2

The third and fourth chemical reactions are Single replacement and Combustion reactions. Single replacement reactions are when an external metal and a metal anion switch places to form a compound and a single metal as products. For example, A+BC -> AC+B. The driving force, because it is a redox reaction, is the transfer of electrons. A Combustion reaction is when a compound/element reacts with oxygen to form water and carbon dioxide. For example, (compound) + O2 -> H2O + CO2. If the combustion reaction is using a hydrocarbon (compound with hydrogen carbon and sometimes oxygen), then to balance it you should use the CHO method. Which consists of starting by balancing Carbon then Hydrogen and then Oxygen.