Creado por ashleypwainwright
hace más de 9 años
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Pregunta | Respuesta |
Molecular Formula | Actual number of atoms of each element in a molecule. |
Empirical Formula | Simplest whole number ratio of the atoms of each element in a molecule. |
Homologous Series | Series of organic compounds having the same functional group with successive members differing by CH2. |
Functional Group | Group of atoms responsible for the characteristic reactions of a compound. |
Structural Isomers | Same molecular formula, different structures. |
Hydrocarbon | A compound that contains hydrogen and carbon only. |
Saturated | Contains only single C-C bonds. |
Radical | Contains an unpaired electron. |
Fractional Distillation | Separates due to differences in boiling point. |
Fraction | Mixture of compounds of similar boiling point. |
Cracking | Breaking a long chain alkane into a shorter chain alkane and alkene. |
Biofuel | A fuel produced from plant or animal waste. |
Stereoisomers. | Same structural formula but different arrangement in space. |
E/Z Isomers | Isomers resulting from restricted rotation about a double bond, where two different groups are attached to each carbon of the C=C. |
Cis/trans Isomers | A special case of E/Z isomerism in which two of the substituent groups are the same. |
Unsaturated | Contains one or more double C=C bonds. |
Electrophile | Electron pair acceptor. |
Nucleophile | Lone pair donor. |
Reflux | Continuously boil and condense. |
Standard Conditions | Temperature 298k, Pressure 100kPa |
Enthalpy Change of Reaction | Enthalpy change when the reaction occurs in the molar quantities shown in the chemical equation. |
Enthalpy Change of Formation | Enthalpy change when one mole of a compound is formed from its elements. |
Enthalpy Change of Combustion | Enthalpy change when one mole of a substance is completely burnt. |
Hess's Law | Total enthalpy change is independent of route. |
Average Bond Enthalpy | Energy needed to break one mole of gaseous bonds. |
Activation Energy | Minimum energy needed for a reaction to occur. |
Catalyst | Speeds up a reaction without being used up. |
Le Chatelier's Principle | The position of equilibrium will shift so as to minimise the effect of any change in conditions. |
Dynamic Equilibrium | Rates of forward and backward reactions are equal. Concentrations are constant. |
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