Writing Chemical Formula of ionic Compounds (O level Chemistry) Writing chemical formula and naming chemical compounds are some of the things O level chemistry students find challenging. This post is…
Electrolysis questions and answers (O level Chemistry) Electrolysis questions and answers for O level Chemistry students. In this post we will be looking at some questions from different O level…
Nitrate fertilisers Nitrate fertilisers, such as ammonium nitrate and potassium nitrate, are very important in agriculture because they add the much needed nitrogen to the soil. Plants require nitrogen for…
Acids Bases and Salts Questions and Answers (O level Chemistry) Question 1 Acids are neutralised by alkalis. Write the ionic equation for the reaction between an acid and an alkali.…
Stoichiometry questions and answers (Page 3) Question 1 Copper reacts with concentrated nitric acid as shown by the equation below: Cu(s) + 4HNO3(aq) → Cu(NO3)2(aq) + 2NO2(g) + 2H2O(l) Suggest…
What are redox reactions (A level Chemistry) A RedOx reaction is simply a reaction in which Reduction and Oxidation take place at the same time. Oxidation in simple terms We…
Atomic Structure Revision Questions and Answers (O level Chemistry) Question 1 The table shows some information about six particles. Complete the table. ParticleProton (atomic) numberNumber of neutronsNumber of electrons 35Cl1718.........…
What are transition elements? Transition elements are d-block elements that form one or more stable ions with a partially full d subshell. However, not all d-block elements are transition elements…
The Zimsec O level Exam Timetable December 2020 is out and exams are starting in early December up until February. You can download the Grade 7, O level and A…
Some Important Chemical Reactions you should know (O level chemistry) Ionisation of elements Ionisation of Group 1 elements (alkaline metals) Atoms of Group 1 elements have 1 electron in the…