C6 Key Terms

C6 Key Terms

Pink- Higher and Foundation Tier

Blue- Foundation Tier

Addition reaction- Reaction in which two reactants combine to make only one product

Alcohol- Organic compound that contains the –OH functional group

Anion- Negatively charged ion

Anode- Positively charged electrode

Cathode- Negatively charged electrode

Cation- Positively charged ion

Chain reaction- Reaction in which radicals take part. At each stage one of the products is a new radical

Chlorine radical- Chlorine atom that is not combined in a molecule

Chlorofluorocarbon (CFC)- Compound with molecules that contain the elements carbon, chlorine and fluorine only

Denatured- State of proteins that have had their structure altered by heating or by chemical treatment

Detergent- Compound with molecules that have one end soluble in oil and one end soluble in water. This means that it will lift grease from clothes

Directly proportional- When one variable changes in the same ratio as another, they are described as being directly proportional

Discharged- Ion that has had its charge removed by gain or loss of electrons

Displacement reaction- Reaction in which one element replaces another in a compound

Dry cleaning- Process of removing dirt from clothes using solvents other than water

Electrolyte- Liquid that will conduct an electric current and decompose

Emulsion- System that contains small droplets of one liquid dispersed through a second liquid

Energy level diagram- Diagram that shows the relative energy contents of the reactants and products in a chemical reaction

Ester- Compound such as ethyl ethanoate made by reacting an organic acid with an alcohol  

Ethanol- Alcohol with the molecular formula CH₃CH₂OH

Exothermic reaction- Reaction in which energy is transferred to the surroundings, in the form of heat, light and sound for example

Fatty acid- An organic acid that has a –COOH functional group attached to a long hydrocarbon chain. The chain may contain both single and double carbon-carbon bonds

Fermentation- Process in which sugars are converted to alcohols and carbon dioxide by the action of enzymes in yeast

Fractional distillation- Separation of a mixture into fractions that boil at different temperatures

Fuel cell- Device that transforms chemical energy directly into electrical energy but does not involve combustion

Galvanising- Coating iron with a layer of zinc to protect…