Review Sheet Flashcards
Maximum number of electrons that the first shell can hold
2
Maximum number of electrons second shell can hold
8
Maximum number of electrons third shell can hold
8
Maximum number of electrons that fourth shell can hold
18
What does the atomic number also represent?
Number of protons
Where are protons located?
Nucleus
Where are electrons located?
Shells of the atom
Where are neutrons located?
Nucleus of the atom
Atom
Has the same number of protons and electrons
Neutral particle
Ion
Charged particles
It gains or loses electrons
An electro charge hat forms when an atom gains or loses an electron
Did a positive ion gain or lose electrons?
Lose
Did a negative ion gain or lose electrons?
Gain
What family is halogens in?
17
What family is noble gasses?
18
What family is Alkali metals in?
1
What family is Alkali earth metals in?
2
Is Hydrogen in the Alkali metals?
No, it isn’t a metal
The periodic table
It organizes the elements according to their physical and chemical properties.
Periods
7 Horizontal rows of the periodic table
Families
18 vertical columns on the periodic table
Where do metals appear on the periodic table?
Left side of the staircase
Where do non-metals appear on the periodic table?
Right side of the staircase
Where are Metalloids located in the periodic table?
Zig zag staircase
Average atomic mass
Is the weighted average of the masses of the atom of an element
What are the rules of writing a chemical symbol?
- First letter must be capitalized
- Symbol is one or 2 letters
- Second letter, if present is lower case
What is a gas at room temperature
Chlorine
What metal is a liquid at room temperature
Mercury
Physical properties of metal?
Ductile, malleable, good conductors of heat and electricity
Atomic mass
With decimals
The mass of an average atom of that element
Mass number
No decimals
What kind of particle has to be added or removed from an atom so that it has a charge?
Electron
Ion charge
The electric charge that forms on the atom when it gains or loses an electron
What ion is on the left side of the periodic table?
Positive
What ion is on the left side of the table
Negative or neutral
What are the 3 major groups of categorization on the periodic table?
Metals
Non-metals
Metalloids
What are the 4 families in the periodic table?
Halogens
Alkali metals
Alkaline earth metals
Noble gasses
Metal charge
Positive ion
Non-metal charge
Negative ion
Noble gasses charge
No charge
