Calorimetry Experiments There are two types of calorimetry experiments you need to know for IB Chemistry: Enthalpy?changes of?reactions in solution Enthalpy?changes of?combustion In both cases you ...
Calorimetry Measuring enthalpy changes Calorimetry?is a technique used to measure changes in enthalpy of chemical reactions A?calorimeter?can be made up of a?polystyrene drinking cup, a?vacuum flas...
Standard Enthalpy Change Standard conditions To compare the changes in enthalpy between reactions, all thermodynamic measurements are made under?standard?conditions These?standard conditions?are: A...
Temperature & Kinetic Energy What is the difference between heat and temperature? This can be illustrated using a beaker of boiling water and a pipette: The effects of boiling water can be quit...
Alloys Alloys are?mixtures of metals, where the metals are mixed together physically but are not chemically combined They can also be made from metals mixed with nonmetals such as carbon Ions of th...
Trends in Melting Points of Metals The?strength?of electrostatic attraction can be increased by: Increasing?the number of?delocalised?electrons?per metal atom Increasing?the?positive?charges?on the...
Metallic Bonding Metal?atoms are tightly packed together in?lattice?structures When the metal atoms are in?lattice?structures, the electrons in their outer shells are free to move throughout the st...
Properties of Covalent Compounds The physical properties of?molecular covalent compounds?are largely influenced by their?intermolecular forces If you know the type of?intermolecular forces?present ...
Deducing Intermolecular Forces In order to deduce the types of?intermolecular forces?present in molecules you need information about the structure and chemical formula of the molecules The chemical...
