1. Alien Insect Periodic Table
Each pair has a set of alien insect pictures.
Please follow the procedure on pg
Draw the missing pictures and answer “Analyze and Conclude” questions 7-9 on pg 64 of your ISN.
Please write questions 7-9 in your notebook to finish for homework if you don’t get to them!

2. Do Now Please write HW in your agenda Please update your notebooks
Be prepared to discuss last night’s homework!
Page #
Title
Date 71
Periodic Table Basics
12/02/14 72
Study Guide Guide

3. Periodic Table
The periodic table is a chart of the elements arranged into rows and columns according to their physical and chemical properties.
Elements are grouped together by their similarities in properties and trends.

4. Dimitri Mendeleev
Dimitri Mendeleev was a Russian chemist who created the earliest periodic table.
He arranged the elements in a list using their atomic masses and found that the properties of the elements repeated in a pattern.
He used this table to predict the properties of elements that were not discovered yet.
Periodic means “repeating pattern.”

5. Periodic Table Basics Rows on the periodic table are called periods.
Columns on the periodic table are called groups or families or groups.
Each individual element has an atomic number. This is the number of protons that the atom of this element has.
As you move from left to right, and top to bottom, the atomic number and the atomic mass increases.

6. The Periodic Table of Elements
Atomic number increases!
Atomic mass increases!

7. The Periodic Table of Elements
Atomic mass increases!

8. The Periodic Table of Elements
Number of valence electrons
Electrons in the outermost energy level!

9. Reading an Element’s Square
How do I find…
# of protons = atomic number
# of electrons = atomic number
*in a neutral atom*
# of neutrons = mass number atomic number
*round the mass number to the nearest whole number*

10. Using the Periodic Table
Metals, Nonmetals, Metalloids

11. The Periodic Table
The periodic table is sorted by similarities in properties
There are three main categories on the periodic table: metals, nonmetals, and metalloids.
These categories are broken up into smaller families with more specific properties. (Alkali metals, Halogens, Noble Gases, etc.)
Today we’re going to look at the 3 main categories and the properties that they share.

12. Metals Have luster (shiny) Malleable and ductile
High densities and high melting points
Good conductors of electricity, but poor insulators
Most are solids
Examples of families: alkali metals and alkaline earth metals are very reactive.

13. Nonmetals Have no luster Brittle
Good insulators, but poor conductors of electricity
Most are gases
The elements that make up life are nonmetals (carbon, oxygen, hydrogen)
Examples of families:
Halogens: Very reactive
Noble gases: Nonreactive or inert

14. Metalloids Have properties of metals and nonmetals
Semiconductors: conducts electricity at high temperature, insulates at low temperatures
Used in electronic devices
Example: Silicon is the most abundant metalloid.

15. Foldable Cutouts Open your textbooks to pg 348-349.
Fill in all atomic numbers and atomic masses for each element on your sheet. Then, cut out each element square.
Use the textbook to help you sort each element in their correct category in your foldable(metal, nonmetal, metalloid).