Topic 2 - Atomic Structure

Question 1

Describe protons

Answer 1

Relative mass: 1
Charge: +1
Location: the nucleus

Question 2

Describe neutrons

Answer 2

relative mass: 1
Charge: 0
Location: the nucleus

Question 3

Describe electrons

Answer 3

relative mass: 1/2000
Charge: -1
Location: the shells

Question 4

What is the mass number?

Answer 4

Protons + neutrons

Question 5

What is the atomic number and what does it determine?

Answer 5

Number of protons

Determines the element

Question 6

Define isotope

Answer 6

Atoms which have the same number of protons, but a different number of neutrons

Question 7

Describe the relationship between isotopes and their chemical reactions

Answer 7

They are the same

Question 8

What is a period in the periodic table?

Answer 8

A row

Shows the number of shells

Question 9

What is a group in the periodic table?

Answer 9

A column

Shows the number of electrons in the outer-shell

Question 10

How do you calculate RAM?

Answer 10

Add the products of the relative mass of each isotope and it’s percentage. Divide this by 100.