Chemistry G-I

Mixtures

not a purse substance like compounds and elements; chemical properties of the substances in the mixture are not changed

Heterogeneous Mixture

particles are large and able to be seen

Homogeneous

molecules are so small that the composition is the same all through no matter the size of the sample; also called solutions; solvent determines the physical state of the solution and is usually present in a larger amount than the solute

Solution

homogeneous mixture; if the the solvent is water the it is called aqueous(aq); solution=solute +solvent

Molar concentration(molarity M)

this pertains to the solute; measure of concentration of the solute in the solution

M= mols of solute/Liters of solution

concentration does not cvhange no matter how much of a solution you sample out

Dilution

the process of reducing the concentration of a solution by adding more solvent- the mols of solute does not change

MV=MV: this tells me the mols of solute does not change; the volume and concentration change but the amount of dissolved substance(mols) stays the same