Ions and their Charges
When an atom loses an electron, it becomes a _____charge.
positive
An ionic bond is the attraction between what 2 types of charges.
positive and negative charges
How do we change the name of an anion for example, Nitrogen?
Change the ending to -ide, Nitride
A shorter, easier way to show chemical reactions, using symbols instead of words, is called a _____.
Chemical equation
What are the reactants in: Cu(s) + 2AgNO3(aq) ----> Cu(NO3)2(aq) + 2Ag(s)
Cu and AgNO3
When an atom gains an electron, it becomes a_____ charge.
negative
Bonds that form between two nonmetal atoms usually are ____________________ bonds.
Covalent
What is the chemical name for the compound with the formula Na2S?
Sodium Sulfide
The substances listed on the left side of a chemical equation are the _____.
reactants
What are the products in: 2Al2O3(I) ----> 4Al (I) + 3O2(g)
Al and O2
Ions that are made of more than one atom are examples of _____.
polyatomic ions
Electrons involved in bonding between atoms are _____.
Valence
Name the following ionic compound BaI2?
Barium Iodide
The only sure evidence for a chemical reaction is _____.
forming of new substance
What type of reaction is Cu(s) + 2AgNO3(aq) ----> Cu(NO3)2(aq) + 2Ag(s)
Single Replacement
Elements in Group 1 lose one electron to form ions with a (an) ____________________ charge.
+1
if 4 electrons are shared between ions, what type of covalent bond is it?
double bond
When naming an ionic compound, which name should be first, cation or anion
cation
In a chemical equation, a (an) ____________________ tells you how many atoms of a reactant or a product take part in a reaction.
subscripts and coefficients
What type of reaction: 4CH + 5O2 ----> 4CO2 + 2H2O
Combustion
Oxygen (O) ions tend to form what charge?
-2
Which bond is associated with the sea of electrons?
Metallic Bonds
Name the following compounds NaHCO3
Sodium Hydro-Carbonate (Baking Soda)
The principle of _________________________ states that during a chemical reaction, matter is not created or destroyed.
Conservation of matter.
What do the coefficients tell you about the ratio of the reactants in:
Cu(s) + 2AgNO3(aq) ----> Cu(NO3)2(aq) + 2Ag(s)
there is a 1:2 ration between Cu and AgNO3
What charge does group 3A elements have?
3+
These compounds make patterns called crystal lattice
ionic Compounds
ionic compound
What kind of ions do metals form?
cation
These compounds share electrons
covalent
why do ionic compounds tend to be brittle
the lattice structure
What is a chemical bond
an interaction that holds atoms together
CO2 is an example of what type of compound?
covalent compound
This type of bond has a weaker force of attraction which lowers the melting point
Covalent Bond