C2.2.3 - Forming Ions

Question 1

What is an ion?

Answer 1

An ion is an electrically charged particle formed when an atom loses or gains electrons

Question 2

Do the amount of protons and neutrons change when forming an ion?

Answer 2

No

Question 3

Metals can lose electrons and become positive ions.

Is this true?

Answer 3

Yes

Question 4

Non-metals can lose electrons and become positive ions.

Is this true?

Answer 4

Yes

Question 5

What is the only shell atoms can lose electrons on?

Answer 5

The outer shell

Question 6

How do you work out an ion’s electronic structure?

Answer 6

You get the original electronic structure and add / subtract the electrons

Question 7

What does an electron diagram represent?

Answer 7

The electronic structure of an atom or an ion

Question 8

What do you draw to represent a shell on an electron diagram?

Answer 8

A circle

Question 9

What do you draw to represent electrons on an electron diagram?

Answer 9

Dots or crosses

Question 10

What changes do you make to draw an electron diagram of an ion?

Answer 10

You put the diagram in brackets and outside the brackets you write the charge at the top right.

Question 11

Where do you write the chemical symbol in an electron diagram?

Answer 11

The centre

Question 12

How do you represent a gained electron on an ion on an electron diagram?

Answer 12

It is either a dot or a cross (opposite to what you used for the other electrons)