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AC4.2 COMBINED REVISION EXAM (WITH ANSWERS)

chemistry;<Chem Quest>. Bulk properties - ANSWER The properties such as strength, melting point, conductivity, flexibility and hardness which are related to the different types of bonds the compound contains, the bond strengths in relation to intermolecular forces and the ways in which the bonds are arranged. The atoms themselves do not have these properties. Conductor - ANSWER A material that contains charged particles which are free to move to carry electrical o...

Ion - ANSWER An atom or group of atoms that has a positive or negative charge. Polyatomic ion - ANSWER An ion made of two or more atoms Ionic compound - ANSWER A compound that consists of positive and negative ions Formation of ionic compounds - ANSWER Metal gives electron(s) to non-metals Ionic formula - ANSWER The simplest whole number ratio of the ions which form a neutral ionic compound Group 1 charge - ANSWER +1 Group 2 charge - ANSWER +2 Group 3 charge - ...

Metallic Bonding - ANSWER Metallic bonding occurs when metal atoms bond together. Giant Structures - ANSWER Metals have giant structures of regularly arranged atoms in a lattice. Delocalised Electrons - ANSWER Delocalised electrons from the outer shells are free to move throughout the structure. Electrostatic Forces - ANSWER The strong electrostatic forces of attraction between the positive metal ions and the delocalised electrons form the metallic bonds. Electrical Conductiv...

Global water budget - ANSWER balance of water fluxes and size of water stores involved in hydrological cycle each year Closed system - ANSWER Transfer of energy but no matter between the system and its surroundings Open system - ANSWER Receives inputs from and transfers outputs of energy and matter to other systems Oceans water store - ANSWER 96.9% Continents water store - ANSWER 3.02% (Groundwater 1.1%, River/Lake 0.1%, Soil moisture 0.01%, Atmosphere moisture 0.001%, Biolo...

What is a place? - ANSWER "Places are best capitualised by the idea of locale which refers to the physical settings or social activity as situated geographically" Places vs landscape - ANSWER Landscape refers to the portion of the earth's surface that can be viewed from one spot. The viewer is outside of it and the primary way it's different from places is that places are very much things to be inside of. What can influence how a place changes: - ANSWER Globalisation Gent...

Catalysis - ANSWER Increasing the rate of a chemical reaction by adding a catalyst Centromere - ANSWER The part of a chromosome that connects sister chromatids Chiasmata - ANSWER The points where homogenous chromosomes swap genes in crossing over. Dipeptide - ANSWER 2 amino acids linked by a peptide bond Enzyme - ANSWER A biological catalyst that speeds up the rate of a reaction by lowering its activation energy Eukaryote ( yoo-kar-ri-ote) - ANSWER An organism whose cel...

4 most important of the 25 elements used to build living things - ANSWER - oxygen - carbon - hydrogen - nitrogen Organic Molecule - ANSWER A molecule that contains carbon in association with hydrogen e.g Glucose (C6H12O6) Monomer - ANSWER A chain of individual molecules Polymer - ANSWER A large, complex molecule made from a large number of monomers joined together by covalent bonds in a repeating pattern Inorganic Ions - ANSWER Inorganic elements or molecules that are im...

Criminal - ANSWER Actions breaking the law Deviant - ANSWER Behaviour violating the norma and standards of society White Collar Crime - ANSWER Generally non-violent crimes carried out in commercial situations for financial gain. Bernie Madoff - ANSWER American businessman who used a Ponzi scheme to defraud investors of $80bn. Moral Crime - ANSWER Crimes often regarded as "victimless", e.g. prostitution, vagrancy, underage drinking. State Crime - ANSWER Crimes comm...