Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
17 Cards in this Set
- Front
- Back
Protons
|
Positively charged
mass = 1 amu |
|
Neutrons
|
No charge
mass =1 amu |
|
Electrons
|
Negatively charged
mass> 1amu |
|
Atomic Number
|
Number of protons in the nucleus
|
|
Isotopes
|
Different kinds of atoms of an element that contain a different amount of neutrons, resulting in slightly different masses
|
|
Mass number
|
is equal to the number of protons and neutrons
|
|
Ions
|
Charged atoms
|
|
Metals
|
Loosely held electrons, tend to lose electron and form positive ions
|
|
Nonmetals
|
Tightly held electrons, tend to gain electrons and become negatively charged
|
|
Cation
|
Positively charged ion
|
|
Anion
|
Negatively charged ion
|
|
Periodic law
|
If we order the elements in order of atomic # the properties will repeat
|
|
Group 1
|
Alkali Metals
|
|
Group 2
|
Alkaline Earth Metals
|
|
Group 17
|
Halogens
|
|
Group 18
|
Noble Gases
|
|
The Mole
|
6.022*10^23 atom
grams of any element= 1 mol |