Chapter 1, Unit 3 Monday, September 10, 2012

 List four (4) properties, physical or chemical, of most metals.  Compare the way metals on the left side and the right side of the periodic table react.  If you point to an element in the periodic table at random, is it more likely to be a metal, nonmetal, or metalloid? Explain.  How do very reactive metals behave?

 Metals are all around you  Common metals-zinc, iron, copper, aluminum, nickel and silver  Physical properties  Metals are classified by their hardness, shininess, malleability, and ductility  Most metals are solid at room temperature  High melting points  Chemical Properties  Metals show a wide range of chemical properties  Some are very reactive; others are not  Reactive metals combine with other elements quickly giving off energy.

 An alloy is a mixture of two or more elements that have properties of a metal.

 Alkali Metals-Group 1  The most reactive metals of all  Never found uncombined in nature  Only in compounds  As an element, alkali metals are very soft and shiny.  2 most important  Sodium and potassium

 Alkaline Earth Metals-Group 2  Not as reactive as alkali metals  Never found uncombined in nature  Fairly hard  Gray-white in color  2 most common  Magnesium and calcium  Farther to the right-less reactive

 Transition Metals-Groups 3-12  Familiar metals  Iron, copper, zinc, nickel  Good conductors of electricity  Some are hard and shiny  Fairly stable  React slowly or not at all with air and water  Transition metals in the body  Iron  Part of hemoglobin  Hemoglobin carries oxygen in the bloodstream  Gives blood bright red color

 Groups  Metals, nonmetals, metalloids  Lanthanides and Actinides  Lanthanides  Soft, malleable, shiny metals  High conductivity  Found in nature  Difficult to separate  Actinides  Thorium and uranium exist in significant amounts  Unstable nuclei  Made in the lab and are so reactive that they last only a fraction of a second after they are made.

 List 4 properties, physical or chemical, of most metals.  Malleability, hardness, shininess, ductility  Compare the ways metals on the left side and right side of the periodic table react.  Left side metals are very reactive and the farther right you move the less reactive they become.  If you point to an element in the periodic table at random, is it more likely to be a metal, nonmetal, or metalloid? Explain?  A metal-they are the most abundant in the periodic table.  How do very reactive metals behave?  Combine with other elements quickly giving off energy.