Components of the Atom

Question 1

Charge of electron

Answer 1

-1 unit/electron

Question 2

Charge of proton

Answer 2

+1 unit/proton

Question 3

Charge of neutron

Answer 3

Neutral

Question 4

Mass defect

Answer 4

Discrepancy between theoretical mass and actual mass of an atom that represents the mass that was converted to nuclear binding energy

Question 5

Mass defect formula

Answer 5

E=mc^2

Question 6

Range of mass defect

Answer 6

Mass defect is less than or equal to one percent of the measured mass for all cases

Question 7

Isotopes

Answer 7

Atoms that have the same number of protons but different numbers of neutrons

Question 8

Natural abundance

Answer 8

The relative amount of the various isotopes on Earth (represented as a_n for the nth isotope)

Question 9

General formula for average atomic mass

Answer 9

m_x=(a_1)(m_1)+(a_2)(m_2)+…+(a_n)(m_n)

Question 10

Atomic symbols

Answer 10

(A,Z)X where X is the atomic symbol of the element, A is the mass number (number of protons plus number of neutrons), and Z is the atomic number (number of protons). A is superscript in front of X and Z is subscript in front of X.