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Periodic Table
Bohr Models
Ionic Bonds
Covalent Bonds
Chemical Formulas
100
The number of electrons in the lowest energy level
What is 2 electrons?
100

How many electrons can be in the first shell of an atom?

What is two?

100
Sodium loses an electron
What is Na+?
100
When an electron is attracted to the nuclei of two atoms at the same time
What is a covalent bond?
100
the combination of chemical symbols and possibly numbers
What is the chemical formula?
200
The group that has two valence electrons?
What is group 2?
200

How many electrons can be in the second shell of an atom?

What is 8?

200
Chlorine gains an electron
What is Cl-?
200
the overall charge of a particle that is covalently bonded
What is neutral?
200
The chemical formula for 2 atoms of carbon and 4 atoms of hydrogen
What is C2H4?
300
The group that has a full outer shell
What are the noble gases?
300

How many electrons are needed to FILL an outer shell?

What is 8?

300
The attraction between a positive ion and a negative ion
What is an ionic bond?
300
The particle formed when atoms share electrons
What is a molecule?
300
the number of atoms of hydrogen in hydrogen gas
What is 2?
400
the number of electrons in bromine's outer shell
What is 7?
400

What group on the periodic table already has a full outer shell?

What is group 18?

400
A pure substance containing two or more elements
What is a compound?
400
When a atom shares two electrons with another atom
What is a double bond?
400
The number of atoms of hydrogen in ammonia
What is 3?
500
The rule for predicting the number of electrons in the 5th energy level
What is 2 times n squared?
500
Why are the called "Bohr" Models?

After Neils Bohr

500
A hard, crystalline compound composed of positive metal ions and negative non-metal ions
What is an ionic salt?
500
The type of bond between 2 nitrogen atoms
What is a triple bond?
500
the total number of atoms in a molecule of carbon dioxide
What is 3?