2635872
Descripción
Fichas por lilli.atkin, actualizado hace más de 1 año
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Creado por lilli.atkin
hace más de 9 años
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| Pregunta | Respuesta |
| Salt | the compound produceed when the H+ ion of an acid is replaced with a metal ion or NH4+ ion |
| Disproportionation | When an element is both oxdised and reduced in a reaction |
| Functional group | the group of atomes responsible for the charateristic reactions of a compound |
| Standard Conditions | 101KPa 298K |
| Electronegativity | the ability of an atom to attract the bonding electrons in a convalent bond |
| Homolytic fission | Breaking of a convalent bond to form 2 radicals |
| Relative isotopic mass | the mass of an isotope of an atom compared to 1/12 of carbon 12 which is taken as 12 exactly |
| Steroisomerism | some molecular formula different 3-D arrangement in space |
| Acid | substance that releases H+ ions in an aqueous solution |
| First ionsation Energy | energy required to remove 1 electron from each mole of gaseous atoms of that element, to form a mole of gaseous ions with 1+ charge |
| Periodicity | a trend whcich is repeated across different periods |
| Relative atomic mass | the mean weighted mass of an atom compared to 1/12 of carbon 12 which is taken as 12 exactly |
| Structural Isomerism | same molecular formula different structural formula |
| Nucleophile | Electron donator gives a pair of electrons |
| Electrophile | Accepts a pair of electrons |
| Homologous Series | a series of organic compounds having the same functional group with each succesive member differing by CH2 |
| Base | a substance that can react with the hydrogen ion released by an acid |
| Hetrolytic Fission | Bond breaking to form a cation and an anion |
| What is the reaction of chlorine and water? | Cl2 + H20 goes to HCl + HClO |
| Group 2 are ......... | Reducing Agents |
| Disadvantages of chlorinated water | - Gas is TOXIC - Organic matter in water can become chlorinated hydrocarbons which may be harmful to health |
| Explain why Group 7's effective nuclear charge decreases as you go down the group | -More electrons therefore should pull electrons more easily -Shielding and atomic radius outweigh charge -Effect of nuclear charge decreases therefore attraction experienced by electron is less |
| What are 2 uses of Group 2 metals? | -Calcium hydroxide is a fertiliser -Magnesium hydroxide used in antiacid tablets |
| Group 7 are..... | Oxidising agents |
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