NATURALS

WARM-UP ACTIVITY

Distinguish homogeous and heterogeneous mixture

WHAT IS A SOLUTION, WHICH PARTS

CONCENTRATIONS

-MATTER: Made of atoms, is everywhere-DISTINGUISH: pure substance and a mixture.-PURE SUBSTANCE: Definite and constant composition.-COMPOUNDS: Made of two or more elements..-ELEMENTS: Composed of a single kind of atom.-ATOM: Smallest particle of an element.

IDEAS:

A HOMOGENOUS MIXTURE, SOMETIMES CALLED A SOLUTION, IS RELATIVELY UNIFORM IN COMPOSITON, LIKE BE EVERY OTHER PORTION AND WE CANNOT SEE THE DIFFERENT COMPONENTS OF THE MIXTURE

A HETEROGENOUS MIXTURE IS A MIXTURE WHICH COMPOSITION VARIES FROM POSITION TO POSITION WITHIN THE SAMPLE, AND WE CAN SEE THE DIFFERENTS COMPONENTS.

EXAMPLE: WATER WITH SAL

WATER AND OIL

SOLUTION: SOLVENT AND SOLUTE SOLUTION CAN BE WITH DIFFERENTS STATESSOLUT; IS DISOLVEN IN SOLVENTSOLVENT; THE MAIN COMPONENT OF THE SOLUTION .

SOLVENT: IN COUR CASE, WATERSOLUTE: LIQUID

HOW CALCULATE THE COMCENTRATIONS (PERCENT) COMPOSITION BY % MASS .100 G SOLUTE G SOLUTIONG/L G (SOLUTE) L (SOLUTION)% VOLUME L SOLUTE G SOLUTION L SOLUTION

EXPERIMENT A 100 ML SOLUTION A CONCENTRATION OF 10% MASS OF SALT AND WATER