empirical formula
What is the empirical formula
Empirical formulas show the simplest whole-number ratio of atoms in a compound
What is stoicomerty
the relationship between the relative quantities of substances taking part in a reaction or forming a compound, typically a ratio of whole integers
What are Lewis structures
A Lewis Structure is a very simplified representation of the valence shell electrons in a molecule.
What is a chemical reaction
A reaction that is cause between two elements
What are balanced equations
Equations with the same amount of reactants a products on both sides
What are the steps to the empirical formula
What is dimensional analysis
What are the dots surrounding the element
The valance electrons
How do chemical reactions happen
Chemical reactions involve breaking chemical bonds between reactant molecules (particles) and forming new bonds between atoms in product particles (molecules). The number of atoms before and after the chemical change is the same but the number of molecules will change
What are reactents
A chemical equation describes a chemical reaction. Reactants are starting materials and are written on the left-hand side of the equation
What is the empirical formula of H2O
H2O this is becasue it is already in its simplest form
What are the train tracks
The bars used to help sort things in stociometry
What are valance electrons and how do they work
They are electrons on the outer most shell
What are the chemical reaction symbols
Yields
Indicates the results of the reaction
+
Reacts with or and
Does not imply math addition
Precipitate
Used to indicate a solid was formed
(6), (), (в)
or (ag)
Solid, liquid, gas or aqueous
The phase of matter the substance is in
Reacts with heat
Heat was needed for the reaction to happen
Gas is given off during reaction
The reaction gives off gas
What are products
Products are the end result of the reaction and are written on the right-hand side of the equation
True or false the molecular formula is the empirical formula
False the molecular formula is not the empirical because often it is not in the simpalit form
How do you do stociometry
What is the difference in bonds
Some bonds require more atoms to be formed in order to balance out the electrons
Reactions that changed Chemistry
1. Malliard reaction - it helped us understand how fire cooks things
2. Bronze - people used copper with tin to make bronze
3. Fermentation - helped understand how to grow crops and make wine
4. Saponification - helped us make soap to clean ourselves
5. Silicon - used to create things like technology
What are the stepts to mole to mole coversions
Mole to Mole conversions
1. Find a balanced equation that describes the reaction
2. Identify the "given" information and what the problem is asking you to find
3. List other known quantities
4. Prepare a "train track" and plug in your conversion factors
5. Cancel units and calculate
How does the empirical formula help with Chemestry
It helps throught conversions of ions
How do we use stoicomerty in chemistry
We use it to help determine the amount of atoms moles or mass element has
How do we use Lewis structures
We use them to show how chemical formulas are made
Why do we use them
We use them so we can see what knds of elements react to what other kinds of elements
Why do we use balancing equations
We use them to see how to control compounds and how to also make the compounds out of elements