Valent Valence
Atomic Parts
Bohred
Counting Atoms
Mix and Match
100
Arsenic (As) has ___ valence electrons.
Five
100
These two particles make up the nucleus of an atom.
Protons and Neutrons.
100
The Bohr Model represents this.
Atomic Structure.
100
What is the name of the circled number in this formula?
Coefficent
100
Is this a molecule or a compound molecule? 
Molecule
200
How many energy levels does Ca have?
4
200
This is the charge of a neutron.
Neutral.
200
What element is this?
Sodium
200
What is the name of the circled number?
Subscript
200
Which two elements have the most similar chemical properties?
Phosphorus and Arsenic or Sulfur and Selenium.
300
An atom with two valence electrons will chemically bond with an atom with ____ valence electrons to stabilize its valence shell.
Six
300
This particle has a positive charge, while this one has a negative charge. (Two-part answer)
Proton and Electron.
300
You can tell how many protons and electrons make up an atom by knowing this.
The atomic number
300
How many atoms are in this chemical formula?
N2+3H2
8
300
Which side of the chemical equation is the reactant?
(1) (2)
2H2+O2-----> 2H2O
1
400
The maximum number of electrons that the Valence energy shell (outside energy level of an atom) can hold.
Eight.
400
This is how you find the number of neutrons in an atom.
Subtract the atomic mass from the atomic number.
400
The number of electrons that can occupy the first three energy levels of an atom.
2, 8, 18
400
Is this a balanced equation?
Al2+O3----> AlO3
No
400
Molecule or compound molecule?
Compound molecule.
500
The ______ valence electrons an atom has, the more chemically reactive the element is.
Less
500
These two atomic particles determine the mass of an atom.
Protons and neutrons.
500
What element is this:
Gallium
500
How many atoms are in this formula?
2C4H6+7O2
34
500
Complete the sentence:
Every ______ is a molecule, but not every ______ is a compound.
Compound, molecule.