Bohr Models and Lewis Structures

What is a Bohr Model?

• a simplified representation of an atom

• vertical column in periodic table

• horizontal row in periodic table

• Only shows the element symbol and it's outer most electron shell

Tags

NGSS.MS-PS1-1

Electron live in something called __________.

• nucleus

• orbits

• Shells or Energy levels

• Valences

How many electrons can go in the first energy level?

• 2

• 8

• 18

• 32

This atom has an atomic number of ​ (a)   .

This atom has a mass number of ​ (b)   .

This atom has ​ (c)   valence electrons.

This element is in period ​ (d)  

• 8

• 16

• 6

• 24

• 2

• 12

• 10

• 3

Tags

NGSS.MS-PS1-1

___________ simplify the Bohr Model by showing only the outer valence electrons used for bonding.

• Lewis Dot Diagrams

• Bohr Models

• Electron Clouds

• Periodic Tables

This atom has an atomic number of ​ (a)   .

This atom has a mass number of ​ (b)   .

This atom has an atomic mass of ​ (c)   .

This atom has ​ (d)   valence electrons.

• 8

• 16

• 15.999

• 6

• 24

• 2

• 12

• 10

• 3

Tags

NGSS.MS-PS1-1

John is studying chemistry and he comes across a dot diagram for magnesium (Mg). He believes it's correct. Is he right?

• true

• false

Tags

NGSS.MS-PS1-1

What is a Lewis Dot Structure?

• It shows all of the particles in the atom.

• Contains protons and neutrons

• Only shows the element symbol and it's outer most electron shell

• Contains protons and electrons

What is a drawing of an atom that shows all of the par;cles?

• Lewis Dot Model

• Dalton Model

• Thompson Model

• Bohr Model

Tags

NGSS.MS-PS1-1

What is the the outermost shell with electrons?

• Shells

• Isotope

• Orbit

• Valence