Your cell phone should be away during all times today unless you are viewing the website.

Learning Intentions

• You can identify and describe the different families on the periodic table and their properties.

• You can explain the reactivity trend for alkali and alkaline earth metals.

Content Standards being covered:

Use the periodic table as a model to predict the relative properties of elements based on patterns of electrons in the outermost energy level of atoms. (HS PS1-1)

Student understands how the periodic table is organized, how that organization can be used to determine an elements properties and trends of properties on the periodic table.
81. The periodic table is arranged by increasing atomic number.
83. The period, or row, signifies the number of energy levels that an atom contains
85. The vertical columns, called groups or families, consist of atoms with the same number of electrons in the outer energy level and therefore the same chemical properties.
86. Group 1A (Column 1) are called Alkali Metals, Group 2A (Column 2) are called Alkaline Earth Metals, Group 6A (Column 16) are called Chalcogens, Group 7A (Column 17) are called Halogens, Group 8A (Column 18) are called the Noble Gases or Inert Gases, Groups 1B-8B (Columns 3-12) are called the Transition Metals, Elements #57-71 are called the Lanthanide Series and Elements #89-103 are called the Actinide Series
87. Alkali metals are highly reactive with water and reactivity increases down the group
88. Halogens are mainly gases and are highly reactive. Their reactivity increases as you move up the group
89. Noble gases are unreactive because they have a full outer shell/ energy level

Habits of Mind/Life skills being covered:

Thinking Flexibly

 

Journal Entry:

If protons determine an atoms identity (atomic number), what determines their properties and how they behave?