1. Formula Flashcards
What is a molecule
A group of non-metal atoms joined together by covalent bonds
What is a diatomic molecule
A molecule made up of 2 atoms
What method should you use to find formula when given valency
SVSDF
What is a group ion
Compounds with more than 2 elements
Do you need brackets for group ions
Yes
What is an ionic formula
A formula that shows the charges of the ions as well as the proportion of each
What should the total charge of an ionic formula be
0
What does an elements charge depend on
It’s group
What are the charges for transition metals written in
Roman numerals
What is a chemical equation
Where the names of the chemicals in a word equation are replaced with their formulae
What is the state symbol for solid
(S)
What is the state symbol for liquid
(/)
What is the state symbol for gas
(g)
What is the state symbol for a solution
(aq)
What is a balanced chemical equation
A chemical equation has the same number of atoms of each element on each side
What is the GFM
Gram Formula Mass. The mass of one mole
How do you get the GFM
Adding together all the relative atomic masses of the atoms or ions in the formula
What is the formula for number of moles
n = m/GFM
what is the triangle for concentration
concentration = number of moles/volume
c=n/v
what unit is volume in
litres
what is the formula for volume
v= n/c
what are the formulas for number of moles
n = cv
n = m/GFM
what is the first step in the balanced equations method
identify the known and unknown
what is the second step in the balanced equations method
find the mole ratio
what is the third step in the balanced equations method
calculate and insert the gfm
what is the fourth step in the balanced equations method
take the known substance to 1g and then scale the unknown substance to find the required amount
what is the formula for gfm
gfm = m/n
what is a standard solution
a solution of accurately known concentration
