<img src="https://d5nxst8fruw4z.cloudfront.net/atrk.gif?account=iA1Pi1a8Dy00ym" style="display:none" height="1" width="1" alt="" />
Dismiss
Skip Navigation
Our Terms of Use (click here to view) have changed. By continuing to use this site, you are agreeing to our new Terms of Use.

2.35: Atomic Number

Difficulty Level: At Grade Created by: CK-12
Atoms Practice
Estimated5 minsto complete
%
Progress
Practice Atomic Number
Practice
Progress
Estimated5 minsto complete
%
Practice Now
Turn In
Loading... 

Notes/Highlights Having trouble? Report an issue.

Color Highlighted Text Notes
Show More

Vocabulary

atomic mass unit

(Abbreviation: amu) SI unit for the mass of an atom, where 1 amu equals the mass of a proton (about 1.7 × 10-24 grams).

atomic number

Number of protons in an atom.

mass number

Number of protons plus neutrons in an atom; equal to the atom’s mass in atomic mass units (amu).

Image Attributions

Show Hide Details
Description
Difficulty Level:
At Grade
Grades:
7 , 8
Date Created:
Oct 31, 2012
Last Modified:
Sep 13, 2016
Files can only be attached to the latest version of Modality
Please wait...
Please wait...
Image Detail
Sizes: Medium | Original
 
SCI.PSC.121.32.L.1
Here