Averages for Havana in August. The month of August can be unbearably hot in Havana. Visitors at this time of year are often there for one purpose and that is to swim in the incredibly warm waters of the Gulf of Mexico. As the midday heat descends upon the Cuban capital city, Havana, everyone heads to the water or inside to keep cool.
Mixture-A physical blend of two or more substances that are NOT chemically combined. Compound-A substance that contains two or more elements CHEMICALLY combined in a fixe â¦ d proportion. Compound is chemically combined, mixture is not chemically combined.
A compound is a substance in which atoms of different elements are chemically held to one another. A mixture is a substance made by combining two or more different materials in such a way that no chemical reaction occurs.A mixture can usually be separated back into its original components, a compound can not.  The difference is that a compound is a chemically combined  'mixture' (well defined, with one set of properties) and a mixture  is not chemically combined (in a non-defined, variable combination  of compounds and/or elements, all with its own properties:  kerosine/gasoline/naphta, moist/dry air).