Atoms, Elements & The Periodic Table

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Transcript Atoms, Elements & The Periodic Table

The Periodic Table BY: BRIANNA SHIELDS

DO NOW • • 1. What element has the chemical symbol K?

• 2. How many neutrons does Hydrogen have?

3. How many electrons are in the outer orbit level of aluminum? (need to make a Bohr model)

GOAL • • To construct Bohr models To use the periodic table and become familiar with its elements

The Periodic Table- Video What is the name for the element group in the first column of the periodic table?

What is the name for the element group in the last column of the periodic table?

The Periodic Table- Video

Trends in the Periodic Table • • • • ACS Periodic Table Chemistry: WebElements Periodic Table A Periodic Table of the Elements at Los Alamo...

Chemical Elements.com - An Interactive Period...

The Periodic Table You should be coloring in and labeling your periodic table, as we take notes

Periodic Table Trends • Periodic Table Trends • 1. Atomic number increases left to right, top to bottom

Periodic Table Trends • Periodic Table Trends • 2. Groups / Families = Vertical Columns • • • • Gp 1= Alkali metals Gp 2= Alkaline earth metals Gp 17= halogens Gp 18= noble gases

Group 1= Alkali Metals

Group 2= Alkaline Earth Metals

Gp 17= Halogens

Gp 18= Noble Gases

Periodic Table Trends • Periodic Table Trends • 3. Periods = horizontal rows

Periodic Table Trends • Periodic Table Trends • 4. Metalloids= along stair step line (metal and non-metal characteristics)

Periodic Table Trends • Periodic Table Trends • 5. Metals= everything to left of stair step line

Periodic Table Trends • Periodic Table Trends • 6. Non-metals = everything to right of stair step line (most common)

Periodic Table Trends • Periodic Table Trends • 7. Transition elements- elements in gps 3-12 with unusual properties

Describe the locations of the elements • • • • • • • Ex: Neon is a non-metal located in period 2, gp 18 (noble gases) Sodium A metal located in period 3, gp 1, the Nickel A transition metal located in period 4, gp 10 Fluorine A non-metal in period 2, grp 17 (halogens)

Describe the locations of the elements • • • • • Ex: Neon is a non-metal located in period 2, gp 18 (noble gases) Aluminum A metalloid in period 3, group 13 Hydrogen A non-metal located in period 1, gp 1

Atomic Number How many p, e and n?

Chemical Symbol 19 K 39.10

Atomic Mass

How many p, e and n?

29 Cu 63.55

Review: Bohr Models • Make a Bohr Model of Lithium

KEY #p= 3 #n= 4 #e= 3

Lithium

3P 4N

Review: Bohr Models • Make a Bohr Model of Silicon

KEY #p= 14 #n= 14 #e= 14

Silicon

14P 14N