The Atom

Question 1

What is an atom?

Answer 1

An atom is the smallest particle of an element that still has the properties (characteristics) of that element

Question 2

Particles inside atoms -

Answer 2

• a subatomic particle is a particle found inside an atom

-neutrons
-protons
-electrons

Question 3

Neutron -

Answer 3

• in the nucleus of the atom
• relative change - neural / no charge
• relative mass - 1

Question 4

Protons -

Answer 4

• in the nucleus of the atom
• relative change - positive +
• relative mass - 1

Question 5

Electrons -

Answer 5

• outside the nucleus , moves around
• relative change - negative -
• relative mass - 1\ 1,840 or 0.0005

Question 6

What is the atomic number (periodic table)

Answer 6

Number of protons = number of electrons

Question 7

What is the mass number (periodic table)

Answer 7

Number of protons + neutrons

( minus the proton from mass number to find out neutron)

Question 8

Electron configuration-

Answer 8

Number of e- in each shell

• 1st shell only as 2 electrons
• all other shells have max 8e-