Focus

• how matter is classified 

Including

• homogeneous mixtures

• heterogeneous mixtures

Compound

A pure substance made up of two or more types of atoms that are joined together

Heterogeneous Mixture

A combination of two or more substances that are physically distinct from one another.

(The prefix 'hetero' means different.)

4.6.B investigate and compare a variety of mixtures, including solutions that are composed of liquids in liquids and solids in liquids; and

4.6.C demonstrate that matter is conserved when mixtures such as soil and water or oil and water are formed.

5.6.B demonstrate and explain that some mixtures maintain physical properties of their substances such as iron filings and sand or sand and water;

5.6.C compare the properties of substances before and after they are combined into a solution and demonstrate that matter is conserved in solutions; and

6.6.B investigate the physical properties of matter to distinguish between pure substances, homogeneous mixtures (solutions), and heterogeneous mixtures;

7.6.A compare and contrast elements and compounds in terms of atoms and molecules, chemical symbols, and chemical formulas

7.6.D describe aqueous solutions in terms of solute and solvent, concentration, and dilution; and

7.6.E investigate and model how temperature, surface area, and agitation affect the rate of dissolution of solid solutes in aqueous solutions.