INTRODUCTION
- Chemical Reaction: The breaking and making of bonds between different atoms to produce new substances are called reaction.
- Chemical Equation: The representation of chemical reactions in the form of formulae of reactants and products separated by an arrow mark.
- Balanced Equation: The same number of atoms of each element on the LHS (i.e, reactants) and RHS (i.e, products) of the equation.
- Informative Equation: Representation of physical states using symbols like s (solid), l (liquid), g (gas), aq (water-soluble solutions).
TYPES OF REACTION
- Combination: When two elements or one element and one compound or two compounds combine to give one single product.
- Decomposition: Splitting of a compound into two or simpler products.
- Displacement: More reactive metal ( non – metal ) displaces the less reactive metal (non – metal ) and takes its place.
- Oxidation: Reaction that involves the gain of oxygen or loss of hydrogen (loss of an electron.)
- Reduction: Reaction that shows the loss of oxygen or gain of hydrogen 9 (gain of electron).
- Redox Reaction: Chemical reaction which shows both oxidation and reduction reaction.
- Precipitation: The formation of insoluble compound called precipitate in a reaction.