Atomic Structure Study - B: Atomic number, Mass number, etc...

Question 1

Proton Charge

Answer 1

+1

Question 1

Proton Mass

Answer 1

1 amu

Question 2

Neutron Mass

Answer 2

1 amu

Question 3

Neutron Charge

Answer 3

none

Question 4

Electron Mass

Answer 4

1/1823 amu

Question 5

Electron Charge

Answer 5

-1

Question 6

Atomic number

Answer 6

Number of protons in the nucleus

Question 7

Number of protons in an atom =

Answer 7

Number of electrons

Question 8

Mass number (nucleons)

Answer 8

protons + number of neutrons

Question 9

The number of ___ does not change, but the number of _____ can.

Answer 9

Protons, electrons/neutrons

Question 10

Ion

Answer 10

Formed when an atom loses/gains one of more electrons

Question 11

Isotopes

Answer 11

Atoms of the same element that have a different # of neutrons (different mass number)

Question 12

1 amu =

Answer 12

1/12 the mass of a carbon-12 atom

Question 13

Atomic mass expressed in grams

Answer 13

Gram Atomic Mass

Question 14

Gram Atomic Mass =

Answer 14

mass of one mole of the element (Molar mass)

Question 15

one mole is a ____ of atoms, called ______

Answer 15

definite quantity, Avagrado’s number

Question 16

Molar mass

Answer 16

mass of one mole of the element