Intro to the Periodic Table

Evaluation/ Assessment Objective Today I will be able to: Identify the properties of the families on the periodic table Evaluation/ Assessment Informal assessment – Listening to group interactions and discussions as they complete the analyzing the periodic trends graphing activity Formal Assessment – Analyzing student responses to the exit ticket and graphs

Lesson Sequence Warm – Up Engage/Explore: Coloring the Periodic Table Explain: Introduction to the periodic table notes and video clips Elaborate: identify the trends in noble gases and across periods Informal assessment as students predict trends Evaluate: Exit ticket

Warm - Up A laser emits light of frequency 4.74 x 1014 Hz. What is the wavelength of the light in nm? What is the energy, in Joules, of this laser?

Objective Today I will be able to: Identify the properties of the families on the periodic table Review for the upcoming Chapter 4 exam

Homework Study for Electrons Exam November 11

Agenda Warm – Up Coloring the Periodic Table Introduction to the Periodic Table Notes Exit ticket

Coloring the Periodic Table Activity Follow Mr. Klotz’s directions to color the periodic table Discuss the importance of order for the periodic table. What are some ways we can order it already?

Intro to the Periodic Table Notes

There are two ways to number the periodic table:

Periodic Table Structure Vertical groups are called families or groups, and have similar properties - There are 18 groups Horizontal rows are called periods - There are 7 periods Elements are classified into three types – metals, non-metals, and metalloids (sometimes called semi-metals)

Metals Found to the left of the “zig-zag” line on the Periodic Table Properties of Metals - Luster – shine - Malleable – can be hammered into sheets - Ductile – can be drawn into a wire - Good conductors – allow heat and electricity to pass through

Classification of Metals Alkali Metals (Group 1, except H) – water solutions are alkaline (basic) Alkaline Earth Metals (Group 2) – extracted from earth’s minerals Together, they are called the Active Metals Bloedorn high school video

Classification of Metals Transition Metals (Found in periods 4-7, in the middle of the table) – mostly found in compounds Inner Transition (Rare Earth) Metals - Lanthanides – starting with La, 4f sublevel being filled - Actinides – starting with Ac, 5f sublevel is being filled

Non-Metals Non-metals and noble gases are found to the right of the “zig-zag” line Their properties are the opposite of metals

Classification of Non-Metals Halogens (Group 17) – highly reactive, all form salts by reacting big time with alkali metals, as well as other metals – also reacts with non-metals Noble Gases (Group 18) – least reactive, most stable

Metalloids (Semi-Metals) Most of the elements touching the zig-zag line B, Si, Ge, As, Sb, Te, and At They have similar properties of metals and some properties of non-metals

Chapter 4 Review Problems Complete the review for Homework due Monday!

Exit Ticket What is the most stable family on the periodic table? Why is this family the most stable? What families contain the most reactive elements on the periodic table?