Stoichiometry

Question 1

One mole

Answer 1

Amount of substances having same number of particles as atoms in 12g carbon-12

Question 2

Molar mass

Answer 2

mass of one mole of substance measured in g*mol-1

Question 3

Avogrado’s law

Answer 3

One mole of any gas occupies the same volume at the same temp and psi

Question 4

Concentration

Answer 4

Number of moles of solute per cubic decimeter of solution

Question 5

Empirical formula

Answer 5

simplest whole-number ratio of atoms in compound

Question 6

Molecular formula

Answer 6

Shows all atoms in compound

Question 7

Atomic number

Answer 7

Number of protons

Question 8

Mass

Answer 8

Number of nucleons

Question 9

Isotopes

Answer 9

Different atoms of the same element having same atomic number but different mass number.

Question 10

Relative Atomic Mass

Answer 10

Average mass of all of an elements isotopes relative to 1/12th the mass of carbon-12. Measured in amu

Question 11

Water of crystallisation

Answer 11

water molecules caught up in crystal lattice structures of certain salts. Called hydrated salts. Once lost - Dehydrated. Substances that do not have water - anhydrous