Vocab
The electrons of an atom that are at the highest energy level are called what?
Valence electrons
A period of the periodic table ends when the highest level of an element's atoms has how many electrons?
8
An attraction between a positive metal ion and the valence electrons surrounding it is what?
Metallic bond
What includes the symbol of an element surrounded by dots?
Electron dot diagram
The noble gasses have 8 valence electrons, and as a result they are what?
Stable
The force of attraction that holds two atoms together is called what?
Chemical bond
An atom with an electric charge is called a what?
Ion
MgCl2 is an example of what?
chemical formula
When an atom losses an electron, a __________ ion forms
Positive
A neutral group of atoms joined by covalent bonds is a what?
Molecule
Why are metals easy to bend?
Metal ions can be pushed out of positition
When do atoms share two pairs of electrons, what kind of bond forms?
double bond
A covalent bond in which the atoms equally share a pair of electrons is called what?
nonpolar
Most atoms are less likely to react with other atoms when they have how many valence electrons?
8
A mixture of 2 or more elements that has the properties of metal is a what?
Alloy