2.3 The Periodic Table and Atomic Theory Pages 60-63 /index.html 1 By Lester Green Smallwood Academy Gambo.

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Presentation transcript:

2.3 The Periodic Table and Atomic Theory Pages /index.html 1 By Lester Green Smallwood Academy Gambo

1.20 Identify examples of common elements, and compare their characteristics and atomic structure. 2 Carbon Atomic Number 6 Atomic Mass 12 Oxygen Atomic Number 8 Atomic Mass 16 Fluorine Atomic Number 9 Atomic Mass 19 Neon Atomic Number 10 Atomic Mass 20

1.21 Identify Energy Level First level 2 electrons Second level 8 electrons Third level 8 electrons Energy Levels 2,8,8 3

1.21 continued… 1 st energy level ---2 electrons--- 2 nd energy level ---8 electrons--- 3 rd energy level ---8 electrons--- 4 Helium Neon Argon

Define valence energy level. The outermost energy level of electrons around the nucleus of an atom 5

Define valence electrons. The outermost electrons around the nucleus of an atom Also known as Valence Number Oxygen Valence Number 6 Carbon Valence Number 4 6

continued… 7

8

Draw Bohr-Rutherford diagrams for elements 1 to 18 (20) Worksheet: Draw Bohr-Rutherford Models 9

Identify the maximum number of electrons which exist in the first three energy levels. 10 First energy Level 2 electrons Second energy level 8 electrons Third energy level 8 electrons

1.21 Interpret patterns and trends, and explain relationships among variables. 11

Make comparisons of energy level diagrams for elements from the same family or group 12