On September 5, 1774, delegates from each of the 13 colonies except for Georgia (which was fighting a Native-American uprising and was dependent on the British for military supplies) met in Philadelphia as the First Continental Congress to organize colonial resistance to Parliamentâs Coercive Acts.he First Continental Congress, which was comprised of delegates from the colonies, met in 1774 in reaction to the Coercive Acts, a series of measures imposed by the British government on the colonies in response to their resistance to new taxes.
Let's review. Pure substances are defined as substances that are made of only one type of atom or molecule. The purity of a substance is the measure of the extent to which a given substance is pure. The physical properties of a pure substance include well-defined melting and boiling points.
Chemical substances are any materials (in any state-solid, liquid or gas) that have a definite chemical composition. Chemical substances can therefore be either a pure chemical element or a pure chemical compound. Chemical substances are any materials (in any state-solid, liquid or gas) that have a definite chemical composition. Chemical substances can therefore be. a pure chemical element. a pure chemical compound.