UP Board Class 12 th Chemistry paper 1 is scheduled to be held on February 20, 2018, and Paper 2 will be held on February 22, 2018. Students find chemistry a difficult subject because of the chemical ...

Methods Of Balancing Chemical Reactions: Balancing chemical equations is an important part of writing chemical reactions accurately. It ensures that the law of conservation of mass is maintained, ...

This interactive activity allows you to practice balancing equations and offers a game to check your understanding.

“THE inability to balance a chemical equation is a most common difficulty to students of chemistry.” The author has attempted to remedy this very common weakness, and in addition to a concise ...

When using chemical formula it is possible to calculate the percentage composition of the chemical. This can be useful when extracting metals from ores or when making fertilisers for specific plants.

This module teaches fundamental concepts in chemical kinetics for General Chemistry using examples of water quality and water treatment. Key chemistry topics include concentration vs. time data; rate ...

The speed of a chemical reaction is affected by temperature, concentration, particle size and the presence of a catalyst. It can be calculated by measuring changes in reactants/products. Revise: ...