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.
A compound can have properties different from its constituents,  as a new substance is formed when the constituents are chemically  combined.  The constituents of a compound can be separated only by  chemical methods.     Mixtures    Mixtures are impure substances.
 A mixture is a combination of compounds or elements that are not  chemically bonded and do not react with each other, while a  compound is when two or more elements or co â¦ mpounds are chemically  bonded with each other to produce a new substance.lements are the things you see on the periodic table: an element is a substance made up of only one type of atom. A compound is the result of two or more elements that have b â¦ een chemically bonded. For example, if you chemically bond aluminum and iodine, you get aluminum iodide.