Definitions (Formulae and Equations)

Question 1

The mole

Answer 1

Unit of measurement for an amount of chemical; one mole = Avogadro constant (6.02 x 10^23) of particles in an amount of substance

Question 2

Relative mass of a proton

Answer 2

1

Question 3

Relative mass of a neutron

Answer 3

1

Question 4

Relative mass of an electron

Answer 4

1/1836

Question 5

An ______ is an atom of the same element but with a different number of ______, and thus a different ____.

Answer 5

Isotope, neutrons, mass

Question 6

Define Ar

Answer 6

Relative atomic mass; the weighted mean mass of an atom of an element relative to 1/12th of the mass of an atom of carbon-12

Question 7

_______ _______ ____ is the mass of an isotope relative to 1/__th of an atom of carbon-__

Answer 7

Relative isotopic mass, 12

Question 8

12 grams of carbon-12 contains ___ x 10^___ atoms

Answer 8

6.02, 23

Question 9

Unit of molar mass?

Answer 9

g mol^-1

Question 10

Define molar mass

Answer 10

The mass per mole of a substance