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Welcome to the Free Trial section of the website. Here you will find examples of the study guides and tutorial videos that are included in the Member's Area.
Please note that in the Member's Area, the study guides are downloadable PDF files (downloading the study guides is not possible in the Free Trial section).
If you have any comments or feedback, you can contact me using the contact form in the About section of the website.

Topic 1 Stoichiometric relationships

Topic 1 study guide part one 
Topic 1 study guide part one answers
Tutorial videos (these videos are based on past paper exam questions). 
The Member's Area has tutorial videos that cover all the core topics (SL and HL) including the options. 
These multiple choice questions cover sublimation, empirical and molecular formula and limiting reactant. 
These multiple choice questions cover the mole concept, changes of state and molar ratios. 
This video covers limiting and excess reagents, and molar volume of a gas.
Note that at 2:45, there is a slight error - 0.500 / 3 = 0.167, not 1.67
This  video covers calculating the empirical and molecular formula of a compound given the percentage by mass composition. 
This video covers the calculations involved in a titration.