Chemistry

Isotope
An atom containing the same amount of protons as another, but with a different weight.
Atomic Number
The number of protons contained in an atom.
Atomic Mass
The averaged weight of all existing variants and isotopes.
Proton
Determines the element and positive charge.
Electron
Determines the negative charge.
Neutron
Determines mass, along with proton. Neutral charge.
Groups
Vertical, they determine the amount of valence electrons.
Periods
Horizontal, they determine when a new electron shell is added to an atom.
Alkali
Far left on the periodic table, reactive. Metal.
Earth Metals
Second from the left, not as reactive as alkali. Metal.
Transition Metals
In the middle of the table, fairly unreactive. Metal.
Halogens
Second from the right. Gaseous.
Noble Gases
Far right. Gaseous.
Cation
The positive charge on an atom.
Anion
The negative charge on an atom.
Name the element[image]
Helium
Give the number of protons
[image]
2
Give the number of electrons
[image]
2
Give the number of neutrons
[image]
2
Give the typical ionic charge (cation, anion, or none)
[image]
None
Give the mass
[image]
4.0026
What period is this element in?
[image]
Period 1
What group is this element in?
[image]
Group 18
What family is this element in?
[image]
Noble Gases
How many electrons are in the first shell?
2
How many electrons are in the second shell?
8
Is this atom of beryllium more likely to lose or gain electrons to bond?[image]
More likely to lose
IS this atom of oxygen more likely to lose or gain electrons to bond?
[image]
More likely to gain
What are valence electrons?
Electrons on the outer shell of an atom.
What diagram of electrons portrays the valence electrons only?
Lewis Dot Diagram
Ion
The negative or positive charge carried by an atom.
How is an ion formed?
More electrons than protons, or more protons that electrons.
Which elements become cations?
The ones on the left side of the periodic table, they lose electrons in bonding.
Which elements become anions?
The ones on the right side of the periodic table, they gain electrons in bonding.
Why are elements at the far left and second column from the right the most reactive?
They are closest to having full valence shells.
What is covalent bonding and how is it different than ionic bonding?
Covalent bonding involves the sharing of electrons by atoms, where as ionic bonding involves the loss and gain of electrons.
Is a chemical equation with:
Reactants: 2 Oxygen, 3 Nitrogen
Products: 3 Nitrogen, 2 Oxygen
balanced?
Yes
Is a chemical formula with:
Reactants: 2 Beryllium, 1 Lithium
Products: 2 Lithium, 2 Beryllium
balanced?
No
x

Hi!
I'm Anna

Would you like to get such a paper? How about receiving a customized one?

Check it out