June 2018 and 2019 Paper 2 GCE A/L Chemistry - Introduction to GCE A/L 2019
June 2018 and 2019 Paper 2 GCE A/L Chemistry: Introduction Topics
Introduction
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Chemistry June 2019 Paper 2 Solutions
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Chemistry June 2018 Paper 2 Solutions
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Define a closed system as seen in chemical equilibrium?
A system that exchages energy but not matter with the surrounding
Define a closed system as seen in chemical equilibrium?
Define a closed system as seen in chemical equilibrium?
Define a closed system as seen in chemical equilibrium?
Please how do we know that a substance is a weak/strong acid/base???
Any acid that dissociates 100% into ions is called a strong acid. If it does not dissociate 100%, it is a weak acid.
There is no solution to june 2019 Q2b
Hello olga Can you please type the question here so that we try to answer
Will respond to you very soon Helben
Drawna dot and cross diagrams for,.
HNO3,H2SO4,HCN,SF6,POCl3,C2H4
Will respond to you soon Helben