Metals, Non-Metals, and Semimetals Standard 1.b - Students know how to use the periodic table to identify metals, semimetals, non-metals, and halogens.

Arrangement of the Periodic Table Metals are on the left. Nonmetals are on the right. Hydrogen is the exception. Even though Hydrogen is on the left it is a nonmetal.

How to Find the Semimetals: Metals and nonmetals are separated by the semimetals (metalloids). How to Find the Semimetals: A diagonal (stair step) line from Boron (B) to Polonium (Po) separates the metals from the nonmetals. Most elements on this line are semimetals (metalloids).

Properties of Metals Good Conductors (Heat and Electricity) Malleable and Ductile Shiny, Metallic Appearance Most Solid at Room Temperature (except Mercury) Loses Electrons Low ionization (ability to lose electrons) Low electronegativity (ability to gain electrons) Malleable - can be beaten into thin sheets. Ductile - can be stretched into wire. Melting points generally higher.

Properties of NonMetals Brittle Nonductile Solids, liquids, or gases at room temperature Gain Electrons High Ionization High Electronegativity Gases – hydrogen,helium, oxygen Liquids – Bromine Melting Points generally lower. At room temperature, there are 11 gases, and they are hydrogen, nitrogen, oxygen, fluorine, chlorine, and all 6 inert gases, helium, neon, argon, krypton, xenon and radon. It is mercury and bromine that are liquids at room temperature (in the 70s Fahrenheit or Celsius). Rubidium, cesium, gallium, and francium are liquids in room temperature for tropical parts of the world with no AC. All the rest of the elements are solids.

Properties of Semimetals Electronegativities between those of metals and nonmetals Ionization energies between those of metals and nonmetals Possess some characteristics of metals/some of nonmetals Reactivity depends on properties of other elements in reaction Often make good semiconductors The electronegativities and ionization energies of the metalloids are between those of the metals and nonmetals, so the metalloids exhibit characteristics of both classes. Silicon, for example, possesses a metallic luster, yet it is an inefficient conductor and is brittle. The reactivity of the metalloids depends on the element with which they are reacting. For example, boron acts as a nonmetal when reacting with sodium yet as a metal when reacting with fluorine. The boiling points, melting points, and densities of the metalloids vary widely. The intermediate conductivity of metalloids means they tend to make good semiconductors.

Stair Step line divides the Metals from the Non-Metals Stair Step line divides the Metals from the Non-Metals. Follow the Stair Step line to find the Metalloids! Nonmetals Metals

Color the Metals, Nonmetals, and Metalloids on your Periodic Table Place in Binder

Periodic Table Instructions Complete Periodic Table #2 Label: Metals, Semimetals, Nonmetals, and Halogens Number the periods 1-7 Number the Groups 1-18 Identify the different areas on the periodic table. Chemistry - Shearer - Standard 1

Answer Questions on Left Side Opposite Your Periodic Table How many Groups does the periodic table have? How many Periods does the periodic table have? Which side of the periodic table are the metals on? Which side of the periodic table are the nonmetals on? List the semimetals? Which category has the largest number of elements? Chemistry - Shearer - Standard 1