Chemical reaction types
What are the 5 types of chemical reactions?
They are single replacement, double replacement, combination reaction, decomposition reaction and combustion reaction.
where are the valence electrons are located.
In the last shell
Know what type of elements form covalent bonds.
Non metals and Nonmetals
What is the activity series?
It shows an order of elements and if they would replace others in a single replacement reaction.
What does soluble mean?
A substance that can dissolve in another.
Explain the Decomposition reaction
One molecule turns into 2
What is an ion?
A charged atom.
what happens to electrons in a covalent bond.
They are shared
How is the activity series used?
To see what elements would participate in a single replacement reaction.
What does insoluble mean?
A substance that cannot dissolve in another.
What is the general formula for a Double replacement reaction
- AB + CD => AD + BC
what type of elements form ionic bonds.
Metals and non metals
how to name covalent compounds.
Use prefixes
Where are the most active metals located on the activity series?
At the top
How many electrons are transferred during ionic bonding?
Enough to make the atom stable.
What is a subscript?
The number under a chemical formula that is part of the compound.
What is the octet rule?
An atom needs 8 valence electrons to be stable.
What is the octet rule
Elements need 8 valence electrons to be stable.
Where are the least active metals located?
At the bottom
What are the types of ions formed.
Cations and Anions
What is the general formula for a combustion reaction
Combustion reaction - Fuel + O2 → CO2 + H2O.
what happens to electrons in an ionic bond?
they are transferred.
Compare and contrast bonding and nonbonding pairs.
The difference between bond pair and lone pair is that a bond pair is composed of two electrons that are in a bond whereas a lone pair is composed of two electrons that are not in a bond.
What is a solubility chart?
A chart that shows the solubility of elements.
How are ions formed?
When atoms gain or loose electrons.