Atomic and Molecular Masses Flashcards
1
Q
What is the mass of an atom?
A
atomic mass is the mass of the atom in atomic mass units (amu).
2
Q
What is atomic mass unit?
A
mass exactly equal to one-twelth the mass of one carbon-12 atom
3
Q
What is mass?
A
quantity of matter in a given sample of substance
4
Q
What is mole?
A
The unit of measurment in chemistry. A mole corresponds to the mass of a substance that contains 6.023 x 10^23 particles of the substance.
5
Q
What is avogadro’s number?
A
6.022 x 10^23. It is the estimate of the number of atoms in 12.01 g of carbon.
6
Q
What is molar mass?
A
Also called molecular mass, molecular weight, or atomic mass. It is calculated in units g / m.
