MEDIUM
AS and A Level
IMPORTANT
Earn 100

Magnesium chloride contains magnesium ions, Mg2+, and chloride ions, Cl-. 
i) Explain why a magnesium ion is positively charged. 
ii) Explain why a chloride ion has a single negative charge.

Important Questions on Atomic Structure

MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 1
Make a list of the names and symbols for the elements in Periods 1, 2 and 3. 
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 2
How can you deduce the formula of a simple ion (e.g. a chloride ion or an aluminium ion) by reference to the Periodic Table? 
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 3
Write down the formula of a simple ion. 
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 4
Make a list of the subatomic particles in an atom giving their relative mass and relative charges as well as their position in the atom, structure of the atom and isotopes.
 
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 5
Define the term isotope.
EASY
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 6
What do the terms mass number and proton number mean? 
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 7
Deduce the number of protons, neutrons and electrons in an atom or ion of this isotope, e.g. Cr atom or Cr3+ ion. 
 
MEDIUM
AS and A Level
IMPORTANT
Chemistry for Cambridge International AS & A Level Coursebook with Digital Access (2 Years)>Chapter 1 - Atomic Structure>BEFORE YOU START>Q 8
How can you easily identify the group and period of an element?