chapter 1: mole concept

Question 1

definition of relative atomic mass

Answer 1

weighted average mass of the isotopes of the element compared to 1/12 the mass of a carbon atom

Question 2

definition of relative isotopic mass

Answer 2

mass of an atom compared to 1/12 mass of a carbon atom

Question 3

definition of relative molecular mass

Answer 3

weighted average mass of a molecule of the element or compound compared to 1/12 mass of a carbon atom

Question 4

definition of relative formula mass

Answer 4

weighted average mass of a formula unit of the compound compared to 1/12 mass of a carbon atom

Question 5

definition of mole

Answer 5

amount of substance that contains as many particles as there are carbon atoms exactly in 12g of carbon atom

Question 6

definition of empirical formula

Answer 6

simplest formula that shows the relative number of atoms of each element present in a compound

Question 7

definition of molecular formula

Answer 7

formula that shows the actual number of atoms of each element present in one molecule of a compound