Structure Of Atoms

Question 1

What is the relative mass of protons, neutrons and electrons?

Answer 1

Protons- 1
Neutrons- 1
Electrons- 0

Question 2

What is the electrical charge of protons, neutrons and electrons?

Answer 2

Protons- +1
Neutrons- 0
Electrons- -1

Question 3

What is the nucleus made of?

Answer 3

Protons and neutrons

Question 4

What orbits the nucleus on shells?

Answer 4

Electrons

Question 5

What is the atomic number?

Answer 5

The number of protons

Theoretically electrons

Question 6

What is the relative mass of an element?

Answer 6

The no. of protons + no. of neutrons

Electrons have a mass of 0

Question 7

How many electrons can the first shell hold?

Answer 7

2

Question 8

How many electrons can the 2nd and 3rd shell hold?

Answer 8

8

Question 9

Whats the equation for relative mass?

Answer 9

Relative % mass =
(Isotope % * mass) +
(Isotope % * mass) /
100

Question 10

Why do atoms have no charge overall?

Answer 10

The protons and electrons cancel each other out

Neutrons have no charge

Question 11

The gold foil experiment showed?

Answer 11

Atoms must have a dense positive center

Most of the atom is empty space