Periodic Table
The number of electrons in the lowest energy level
There are 2 electrons
The number of VE on a neutral Sodium?
One
What ion symbol do we use when sodium loses an electron?
Na+
What is a covalent bond?
When an electron is attracted to the nuclei of two atoms at the same time
What is the chemical formula?
the combination of chemical symbols and possibly numbers
The group that has two valence electrons?
Group 2.
The number VE on a O2- ion?
There are 8 electrons
What ion symbol do we use when Chlorine gains an electron
Cl-
What does it mean when a covalent compound is neutral?
the overall charge of a particle that is neutral as there are an equal amount of protons and electrons.
What is the chemical formula for 2 atoms of carbon and 4 atoms of hydrogen?
C2H4
The group that has a full outer shell
The noble gases
How many VE on a neutral He atom?
There are two electrons
The attraction between a positive ion and a negative ion is called what?
An ionic bond
Are electrons gained and lost in a covalent bond?
No, the compounds formed in a covalent bond share electrons.
How many number of atoms of hydrogen in hydrogen gas?
There are 2 H atoms in Hydrogen gas
the number of electrons in Chlorine's outer shell
There are 7 electrons.
There are no electrons.
Will He gain or lose an electron?
No
What do you think a double bond would be?
When a atom shares two electrons with another atom
What is C2H5OH?
Ethanol
The rule for predicting how many electrons in shells 1-4?
2, 8, 8, 2
How can you tell the number of VE in any of the first 20 atoms?
By Looking at which group it is in.
(200 points if you say column instead of group)
A hard, crystalline compound composed of positive metal ions and negative non-metal ions has what kind of shape?
An ionic lattice.
Does nitrogen gas (N2) have more than one covalent bond between the two N atoms?
Yes it has 3, otherwise known as a triple bond
A guy and his friend walks into a bar and orders H2O. His friend asks for "H2O too" and died after drinking it. Why?
H2O is water. H2O2 is hydrogen peroxide and is toxic and a carcinogen.