The Periodic Table of the Elements 3 Categories

The Periodic Table of the Elements

3 Categories of the Periodic Table 1. Metals 2. Non-metals 3. Metalloids

3 Categories of the Periodic Table 1. Metals: • Good conductors of heat and electricity • Shiny, ductile, malleable • Reacts with water which results in corrosion • Almost 75% of all elements are classified as metals

3 Categories of the Periodic Table 2. Non-Metals: • Poor conductors of heat and electricity. • Brittle and break easily, dull • Many non-metals are gases. Flourine (Fl), Chlorine (Cl), Bromine (Br), Iodine (I), Astatine (At)

3 Categories of the Periodic Table 3. Metalloids/Semimetals: (metal-like) have properties of both metals and non -metals. • can be shiny or dull. • ductile and malleable. • Uses: computers, calculators and electronics

Practice Identifying Based on what you know AND this element’s place in the periodic table, what category is it? Metal, nonmetal or metalloid? 1. Oxygen – a gas, doesn’t conduct electricity well 2. Silver – shiny, malleable, conducts heat 3. Hydrogen – gas, first element on the periodic table Discuss with your group

YOUR PERIODIC TABLE!

Steps: 1. Create a key 2. Label the categories 3. Outline each category 4. Color

Exit Ticket Answer: What are three categories of elements? Give ONE element from each category