Fundemental Ideas Of Chemistry Flashcards
What is temperature a measure of?
The average kinetic energy of the molecules in a substance
How do you calculate te mr?
Time sthe number of atoms of each element with the Ar of each element. Add the totals together and pit it in g/mol.
Balance Mg+02 —> Mg0
2Mg+ 02—> 2Mg0
What does moles equal?
Mass divided by Mr
How is mass calculated?
MolesxMr
What is avrogado’s constant?
The number of atoms, molecules or ions in one mole of a given substance (6.02x10 23)
What are cgemical amounts measured in?
Moles
How do you gofrom solid to liquid
Melting
How do you ho from liquid to gas
Boiling
How do you go feom gas to liquid
Condensation
How do you go from liquid to solid
Freezing
How do you go from gas to solid
Deposition
How do you go from solid to gas
Sublimation
What are the four states of matter
Solid liquid gas aqueous
How do you calculate percentage by mass
Mass of element/mr of substance x100
How do you find the number of particles
Moles x avogadro constant(6.02x10 23)
Where is the mass number on an element in the periodic table
Above
What are the calculations you do to find how much mass of one of the products will be created from the given mass of one of the reactants
First balance the equation
Then do the mass of the reactant/the mr
This number is the number of moles so times this by however much you need to maintain the ratio of the balancing
Times this by the mr
