Atomic Structure (Lindsay Report)

Question 1

arrangement of subatomic particles within an atom

Answer 1

Atomic Structure

Question 2

when particles are different, they ___

Answer 2

Attract

Question 3

when particles are the same they ___

Answer 3

Repel

Question 4

-positively charged subatomic particles. It carries a charge of ___

• number of protons in the nucleus determines the element’s identity and is equal to the atomic number

Answer 4

Protons, +1

Question 5

-are negatively charged subatomic particles that orbit the nucleus of an atom in energy levels or shells. They carry a charge of ___

-the number of these particles in a neutral atom is equal to the number of protons.

Answer 5

Electrons, -1

Question 6

-no electrical charge (neutral)

Answer 6

Neutrons

Question 7

-is the number of protons in the nucleus of an atom.

-It uniquely identifies an element and determines its position on the periodic table

Answer 7

Atomic Number

Question 8

total number of protons and neutrons in the nucleus of an atom

Answer 8

Mass Number

Question 9

-same element, different mass numbers

-atoms of the same element that have the same number of protons (same atomic mass) but different numbers of neutrons, resulting in different mass numbers

Answer 9

Isotopes

Question 10

Formulas:

Mass Number = ?

Neutrons = ?

Answer 10

Mass Number = P (protons) + N (neutrons)

Neutrons = MN (mass number) - AN (atomic number)