Types of Reactions
What reaction breaks down into simpler substances
Decomposition
Balance the following equation:
H2 + O2 ----> H2O
2H2 + O2 --> 2H2O
Is Mg a cation or an anion?
cation
What is a coefficient?
the number that goes in front of the compound
What two things are present in an ionic compound?
A metal and a nonmetal
What reaction occurs when one element replaces another element in a compound?
single replacement
What is the coefficient that needs to go in the following reaction in front of HCl?
H2 + Cl2 --> HCl
What charge does an anion have?
negative
How many atoms are in this compound:
2 H2S
6
They are lost by one atom / gained by another.
What reaction occurs when different atoms in two different compounds switch
double replacement
We balance equations based on the law of what?
conservation of matter
What charge will chlorine have when it bonds with sodium?
-1
If there is no subscript there is ______ atom of that element.
1
What is the rule that drives ionic and covalent bonding?
The octet rule
combining one or more substances into a more complex substance is called?
synthesis
If I have 6 N2 on the product side of the equation, how many NO3 do I need on the reactant side?
12
Why do elements form ions?
To become stable / to achieve 8 electrons/ full outer shell / the octet rule
How many O's are in Al2(SO4)3
12
is Mg3(SO4)2 an ionic or covalent compound?
ionic
What are the four types of reactions we covered?
Synthesis, decomposition, single replacement, double replacement
What is the coefficient that goes in front of As in the following equations?
As + 6 NaOH --> 2Na3AsO3 + 3H2
2
In an ionic bond, what is present: a cation, an anion, or both?
Both
What is the correct formula when you have three hydrogens, four oxygens, and one sulfur?
H3SO4
when naming an ionic compound, if there is a transition metal present, what must be included in the name?
Roman numerals for the charges