7-1 Notes – Organization of the Periodic Table Chapter 7, Lesson 1

For your Chapter 7 grade, you’ll need to memorize and sing this to the class.

For your Chapter 7 grade, you’ll need to memorize and sing this to the class.

If you successfully perform it Just kidding! BUT You CAN earn +20 If you successfully perform it by Friday June 2nd!

Mendeleev Russian scientist who published the first periodic table in 1869.

Mendeleev He recognized that some elements have similar chemical and physical properties. Fluorine and chlorine are both gases that burn your lungs. Silver and copper are both shiny metals that tarnish when exposed to air.

Arrangement of Elements The periodic table contains information about the structures and characteristics of the elements.

Arrangement of Elements Elements are arranged in the periodic table in order of their atomic number.

Arrangement of Elements “Periodic” means regular, repeating pattern, and properties of elements repeat in each period (row).

Periods A horizontal row of elements in the periodic table is called a period. The atomic numbers increase by one from left to right across a period.

Groups A vertical column of elements in the periodic table is called a group.

Groups Groups are numbered 1–18 across the top of the periodic table. Elements in the same group have similar properties.

The Lanthanide and Actinide Series The two rows of elements at the bottom of the table are the Lanthanide Series and the Actinide Series (also called “rare earth metals”).

Metals Elements that are on the left side and in the middle of the periodic table are metals.

Metals Metallic refers to the properties of common metals.

Metals Luster, or shine, is one property of metals.

Metals Metals are also ductile and malleable. ductile malleable

Metals Conductivity is the ability of a material to transfer electricity or thermal energy, and metals are good conductors.

Metals Most metals are solids at room temperature because of their high melting point, with the exception of Mercury (Hg), a liquid at room temperature.

Nonmetals Elements on the right side of the periodic table are nonmetals.

Nonmetals Nonmetals exhibit properties that are the opposite of metals.

Nonmetals They are poor conductors of heat and electricity, are brittle, and do not have luster.

Nonmetals Nonmetals make up most of the matter in the living world.

Nonmetals Most are gases at room temperature. iodine carbon bromine The solids, carbon (C) and iodine (I) are dull and brittle. Bromine (Br) is the only nonmetal that is liquid at room temperature. iodine carbon bromine

Nonmetals Group 17 elements are the halogens, which are the most reactive nonmetals, and most are dangerous to humans. F

Nonmetals Group 18 elements are the noble gases, which are extremely stable by themselves and occur in nature as single atoms, NOT compounds.

Semimetals 8 elements are semimetals, or metalloids.

Semimetals Semimetals have the properties of both metals and nonmetals. Semimetals conduct electricity but not as well as metals, so they are called semiconductors.

Other Periodic Tables A variety of periodic tables are designed to provide the information needed by different groups of people.

Other Periodic Tables The Student’s periodic table shows the: name state of matter atomic number symbol atomic mass

Other Periodic Tables The Chemist’s periodic table also shows the:

Other Periodic Tables The Astronomer’s periodic table also shows the:

Other Periodic Tables The Physicist’s periodic table also shows the:

Other Periodic Tables A variety of periodic tables are designed to provide the information needed by different groups of people.

Other Periodic Tables A variety of periodic tables are designed to provide the information needed by different groups of people.

If a substance transfers electricity easily, it is said to be ____. 7.1 Organization of the Periodic Table If a substance transfers electricity easily, it is said to be ____. A malleable B conductive C metalloid D ductile

The most reactive nonmetals are the ____ in Group 17. A noble gases B halogens C semimetals D Actinide series

Fluorine has properties most similar to ____. A oxygen B neon 7.1 Organization of the Periodic Table Fluorine has properties most similar to ____. A oxygen B neon C lithium D chlorine

Which is a property of metals? A poor conductors B brittle C low melting point D luster

Which of the following is a noble gas? A nitrogen B oxygen C argon D bromine

Elements in a period are arranged ____. A by increasing atomic number right to left B by increasing atomic number left to right C by increasing valence electrons right to left D by increasing electric charge right to left

Which element is a gas at room temperature? A neon B bromine C magnesium D uranium

Nonmetals are located where on the periodic table? A top B bottom C right side D left side

Make a key at the bottom: Metals Nonmetals Semi-metals

COLOR-CODE on YOUR table Metals Nonmetals Semi-metals H B C Si Al P Ge As Se Ga Sb Te I Sn Po At Bi Rn

COLOR-CODE on YOUR table nonmetals H C P Se I Rn

COLOR-CODE on YOUR table metals H Al Ga Sn Bi