Amount of Substance (Physical)

Question 1

atom economy

Answer 1

the measure of the amount of starting materials that end up as useful products

Question 2

empirical formula

Answer 2

the smallest whole number ratio of atoms of each element in a compound

Question 2

Avogadro’s constant

Answer 2

the number of atoms, molecules, or ions in one mole of a given substance

Question 2

concentration

Answer 2

the amount of substance per unit volume. units given in g/dm³ or mol/dm³

Question 3

limiting reactant

Answer 3

the reactant that is completely used up since it limits the amount of products formed

Question 4

mole

Answer 4

the mass of a substance containing the same number of units as there are atoms in exactly 12g of carbon-12

Question 4

molecular formula

Answer 4

the actual ratio of atoms of each element present in a compound

Question 5

percentage by mass

Answer 5

a value representing the concentration of an element in a compound or a component in a mixture

Question 6

percentage yield

Answer 6

the percentage ratio of the actual yield of product from a reaction compared with the theoretical yield

Question 7

relative atomic mass

Answer 7

the average mass of an atom of an element compared to 1/12th the mass of an atom of carbon-12

Question 8

relative molecule mass

Answer 8

the average mass of one molecule of an element or compound compared to 1/12th the mass of an atom of carbon-12