Chapter 2 - Atomic Structure Flashcards
1
Q
element
A
cant be further divided into simpler substances by chemical methods
2
Q
mixture
A
2 or more substances mixed together but not chemically bonded. can be separated
3
Q
compound
A
chemical combination of 2 or more elements
4
Q
Proton
A
In nucleus
+1 charge
+1 mass
5
Q
Neutron
A
In nucleus
no charge
+1 mass
6
Q
Electron
A
Outer shell
-1 charge
Negligible mass
7
Q
Group VIII outer shell
A
Full
noble gasses
8
Q
Period number =
A
no. of outer shells
9
Q
Isotope
A
same Element with different nucleon numbers
10
Q
isotopes have same
A
chemical and \electrical properties and proton and electron number as original
11
Q
relative atomic mass of element =
A
(iso top no. x abundance) + (2nd iso top no. x abundance) and then divide by 100
