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.
The difference between heterogeneous and homogeneous mixtures is the degree at which the materials are mixed together and the uniformity of their composition. A homogeneous mixture is a mixture where the components that make up the mixture are uniformly distributed throughout the mixture.The composition of the mixture is the same throughout. There is only one phase of matter observed in a homogeneous mixture.Homogeneous Mixture Examples.ou can't see individual chemicals or ingredients in this type of mixture. Only one phase of matter is present in a homogeneous mixture. A heterogeneous mixture is a mixture where the components of the mixture are not uniform or have localized regions with different properties.