Reactions

• A combustion reaction involves the reaction of any fuel (often a hydrocarbon) with oxygen
• Complete combustion occurs when there is sufficient amount of oxygen to produce two by-products of water and carbon dioxide
• Incomplete combustion occurs when fuel reacts with insufficient oxygen and produces carbon monoxide and water.
• A neutralisation reaction is when an acid and base produce neutral products of water and salt (sometimes carbon dioxide)
• Lime water test is to indicate the presence of carbon dioxdie
• Displacement reactions occur when the less reactive ion has a stronger pull for valance electrons of the more reactive atom
• Na is The most reactive element
• Gold (Au) is the least reactive element
• when balance a combustion reaction, 0.5 are allowed front of oxygen only
• If the more reactive variable is an atom then displacement can occur
• If the less reactive variable is an ion then displacement reaction can occur
• Solution is a mixture of a solute dissolved in a solvent
• Solute is a substance that dissolved in a solvent
• Solvent is a substance that dissolves solutes
• Soluble is able to be dissolved
• Insoluble is unable to be dissolved
• Precipitate is the insoluble solid in a Solution
• Exchange reactions occurs when two soluble solutions mix together to form a precipitate (insoluble solid)
• Activation energy: minimum amount of energy required in a reactant in order to react.
• acid + metal hydroxide--> Metal Salt + Water
• Acid + Metal Oxide --> Metal Salt + Water
• Acid + Metal Hydrogen Carbonate --> Metal Salt + Water + Carbon dioxide
• Acid + Metal Carbonate --> Metal Salt + Water + Carbon dioxide
• In a displacement reaction the metal will dissolve
• In an exchange reaction: two soluble solutions swap anion partners to possibly create an precipitate.