Atomic structure

Question 1

What are the 3 subatomic particles?

Answer 1

• protons
• neutrons
• electrons

Question 2

What is the relative charge and mass of a proton?

Answer 2

relative charge = +1
relative mass = 1

Question 3

What is the relative charge and mass of a neutron?

Answer 3

relative charge = 0
relative mass = 1

Question 4

What is the relative charge and mass of an electron?

Answer 4

relative charge = -1
relative mass = very small, negligeable

Question 4

Where are the 3 subatomic particles found?

Answer 4

The protons and neutrons are found in the nucleus, and electrons orbit it.

Question 5

What is the overall charge of an atom and why?

Answer 5

Atoms have no overall charge because the amount of positive protons are equal to the amount of negative elctrons

Question 6

What is the mass number?

Answer 6

The number of protons and neutrons in total; the mass of the nucleus

Question 6

What is the atomic number?

Answer 6

The amount of protons

Question 6

What is an isotope?

Answer 6

Atoms of the same element that can have different numbers of neutrons

Question 7

How are electrons arranged?

Answer 7

Arranged in energy levels (shells). The lowest energy level (shell) can hold a maximum of 2 electrons, the second can hold 8 and the third can hold 8

Question 8

What do electrons occupy?

Answer 8

The lowest available energy level

Question 9

How can the electronic structure be shown and an example?

Answer 9

Can be shown as a diagram or as numbers. Eg for sodium that has 11 electrons, the electronic structure is 2,8,1