Chemical Reactions

• Effervescence is the formation of gas bubbles in a liquid due to a chemical reaction.
• Chemiluminescence is the emission of light due to a chemical reaction.
• Triboluminescence: the emission of light from a substance caused by mechanical stimulation
• Bioluminescence is the production and emission of light by a living organism
• Fluorescence is the emission of light after a substance has absorbed electromagnetic radiation.
• galvanisation is the process of applying a zinc coating to iron or steel to prevent rusting.
• An exothermic reaction releases energy and do not need extra energy from the environment to occur.
• Endothermic reactions absorb heat and require an input of energy from their surroundings to occur.
• Activation Energy is the minimum amount of energy required for reactants to form products.
• a combustion reaction is a exothermic reaction that produces water and carbon dioxide
• A synthesis reaction is when 2 or more reactants combine to form a bigger product.
• A decomposition reaction is where one big molecule breaks down into smaller ones.
• A precipitation reaction happens when two aqueous solutions react to form an insoluble solid, known as a precipitate, which separates from the solution.
• A neutralization reaction is when an acid and a base react to form water and a salt - neutralising each other.