PNE . . .
This presentation is the property of its rightful owner.
Sponsored Links
1 / 11

PNE . . . PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on
  • Presentation posted in: General

PNE. Protons Neutrons Electrons. A positively charged subatomic particle ( found in the nucleus ). Proton. Neutron. A subatomic particle with no charge (found inside the nucleus ). Atomic Number.

Download Presentation

PNE . . .

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Pne

PNE . . .

Protons

Neutrons

Electrons


Proton

A positively charged subatomic particle (found in the nucleus).

Proton

Neutron

A subatomic particle with no charge (found inside the nucleus).


Pne

Atomic Number

The number of protons in the nucleus of an atom of that element. (This is also the number of electrons)

Atomic number


Pne

Atomic #

Symbol

Element’s Name

Atomic Mass


Pne

Mass Number

Mass number is the number of protons and neutrons in the nucleus of an isotope.

Mass # = p+ + n0

16

8

8

16

Arsenic

66

33

66

Phosphorus

15

15

30


Pne

  • Mass Number & Atomic Mass

  • The number of protons (+) and electrons (-) in an atom are the same (as long as the atom is neutral).

  • The number of protons and neutrons (0) is not always the same.


Pne

Isotopes

Isotopes are atoms of the same element that have diff. masses because of diff. numbers of neutrons.


Pne

Warm Up 9/16

If you have a 65 formative average and a 72 summative average, what would your grade be?


Pne

Avg. Atomic Masses

Atomic mass is the average of all the naturally occurring isotopes of that element.

Carbon = 12.011

6

6

6


Pne

Practice

What is the average atomic mass of Lithium if 7.42% exists as Li and 92.58% exists as Li?

Find the average atomic mass:

78.70% Mg, 10.03% Mg, 11.17% Mg

6

7

24

25

26


  • Login