Chem 3 Vocabulary

pure substances that are composed of two or more types of elements that are chemically combined

• element 

• compound

• substance

• pure substance

Tossed Salad

• Heterogenous

• Homogenous

Gravel

• Heterogenous

• Homogenous

Iced Tea

• Heterogenous

• Homogenous

Trail Mix

• Heterogenous

• Homogenous

Separating a mixture using a filter

• mixture

• solution

• filtration

• solute

Mixture

• 
  physical combination of 2 or more substances

• elements and compounds- cannot be separated physically

• what is being dissolved

• what is doing the dissolving (many times water)

Solute

• separating a mixture using a filter

• mixture that is unevenly distributed

• what is being dissolved

• a mixture of a solute and solvent- homogenous mixture

Solvent

• combined

• pure substance made from 2 or more elements chemically

• a mixture of a solute and solvent- homogenous mixture

• what is doing the dissolving (many times water)

THE OCTET RULE

• element is most stable with 8 valence electrons

• Compounds are the substances that make up ALL living and non-living things

• a change in a substance or substances that results in a totally new substance

• The atoms are rearranged and form new bonds, but no matter is lost nor gained