Why is a system of organization important? 33 34 Periodic Table Periodic Table Sep 19, 2013 Sep 19, 2013 Application/Connection : Start Periodic Basics Starter Why is a system of organization important? Exit: Name some other things are grouped together because of their similarities. Practice: Notes

3. Coloring Periodic Table Agenda 1. Starter 2. Notes 3. Coloring Periodic Table 4. Exit 5. Homework

Table of Contents Date Lecture/ Activity/ Lab Page 8/28 Syllabus /Notebook Guidelines 1-2 8/28 Periodic Table/ Formula 3-4 8/28 Tools/ Measurement 5-6 8/28 Lab Report/ Investigations 7-8 8/28 Restroom passes/Homework Log 9-10 8/29 Safety equipment 11-12 8/30 Atoms Vocabulary 13-14 9/3 Atomic Theory Research notes 15-16 9/4 Observation Activity 17-18 9/5 Model Activity 19-20 9/6 Atoms Notes 21-22 9/9 Atomic Charges 23-24 9/10 APEMAN 25-26 9/11 Build An Atom 27-28 9/16 Test Corrections 29-30 9/18 Atomic Math and Bohr Models 31-32 9/19 Periodic Table Notes 33-34 9/20 Periodic Basics 35-36

Practice-The Periodic Table TEKS 8.5C interpret the arrangement of the Periodic Table, including groups and periods, to explain how properties are used to classify elements TEKS 8.5B identify that protons determine an element’s identity and valence electrons determine its chemical properties, including reactivity

The modern periodic table was created by Russian chemist, Dmitri Mendeleev.

Elements are represented on the Periodic Table with chemical symbols. Si Elements are represented on the Periodic Table with chemical symbols. O Na He C Fe

The elements are arranged from left to right based on their atomic number.

The atomic number comes from the number of protons present in stable atoms of that element.

Protons determine the element’s identity!!

Here is the structure of the Periodic Table…

Columns

The columns on the Table are called groups The columns on the Table are called groups. The groups are numbered from 1-18.

Elements within a group have very similar properties. Make this symbol on your Periodic Table: GROUPS

Draw an arrow to show the direction of the groups on the Periodic Table! Which way to the groups go?

VERTICAL

Periods

The rows on the Periodic Table have meaning as well.

The rows are called periods. Left to right is the (period)

Next to the periods, draw an arrow to show the direction of the periods.

Across any period, the properties of elements gradually change Across any period, the properties of elements gradually change. For example, as you move from left to right across the table, atoms tend to become smaller in size, but larger in mass.

Which way do the periods go? HORIZONTAL

KEY Notice the box at the top of the Periodic Table. This is a key that tells us what all of the symbols and numbers mean. 14 Si 28.068 Silicon

Do the following on your key on your Periodic Table. Atomic number -Circle Name = chemical symbol = element symbol-Highlight Atomic mass- Box

Major Groups Elements are classified into three large groups on the Periodic Table. The groups are ……

Metals On the left and bottom

Non Metals On the Right

Metalloids in the Middle along the solid line

Metals = blue Nonmetals = green Metalloids = yellow Application: Using the Periodic Table in your Journal Color the three groups on your Periodic Table and make a key. Metals = blue Nonmetals = green Metalloids = yellow

Blue 1-12 and bottom 2 Use Page 62 in 8th grade book for example On Right Green 14-18 No colore No Color Blue 1-12 and bottom 2 Along jagged line Yellow Use Page 62 in 8th grade book for example

Why is a system of organization important? 33 34 Periodic Table Periodic Table Sep 19, 2013 Sep 19, 2013 Application/Connection : Start Periodic Basics Starter Why is a system of organization important? Exit: Name some other things are grouped together because of their similarities. Practice: Notes