Elements Flashcards
What is an element?
Atom in pure form, single unit
Can elements bond?
yes, into a compound (H2O), (O2)
Name the 3 chemical models
Bohr-Rutherford
Lewis Structure
Simplified Atomic Model (SAM)
What is the Bohr Rutherford?
- shows protons in nucleus
- shows electrons in orbital shells
What is the Lewis Structure?
- shows Outer-Most shell
- Valence electrons
What is the SAM?
- shows protons and neutrons in nucleus
- shows orbital shells
How do you find the Atomic mass?
Protons + Neutrons
What is the Atomic number?
The number of protons
What is the Element symbol?
The Letter(s) that represent the element on the periodic table
How are SubAtomic Particles arranged?
Horizontally (left to right)
What is the charge of the ion if there are more protons than electrons?
positive charge ion
What is an isotope?
When there is a different number of neutrons that can make it unstable. (C14)
What is the charge of the ion if there are more electrons than protons?
negative charge ion
What is it called when there are more neutrons in the ion?
An isotope
What does each period on the periodic table share?
The same number of orbital shells
How are periods arranged on the periodic table?
left to right
horizontally
What does each group on the periodic table share?
The same number of valence electrons
How are groups arranged on the periodic table?
top to bottom
vertically
What are valence electrons?
the electrons on the outermost shell
Where are metals located on the periodic table?
To the left of the staircase
EXCEPT HYDROGEN
What properties do metals have?
Shiny Malleable Ductile Electrically conductive Reactive with acids
Where are nonmetals located on the periodic table?
To the right of the staircase
EXCEPT FOR HYDROGEN
What properties do nonmetals have?
Brittle
No metallic Luster
Non-Malleable
Non-Ductile
Where are Alkali Earth Metals located on the periodic table?
Second to left
Second period
