FBQ1: Modern approach to chemistry deals with equilibrium properties, ability to change and ______ Answer: Structure FBQ2: Physical Chemistry is concern with two major aspects, namely ability to change and ­­­­­­­­­­_____ Answer: Equilibrium properties FBQ3: International system of unit or systeme internatwnale can be written as an acronym _______________ Answer: SI unit FBQ4: Temperature, length, time and mass are examples of ________ Answer: basic quantities FBQ5: Meter, kelvin, second and kilogram are examples of _______ Answer: Basic units FBQ6: A skilful process of identifying. substituting and using correct apparatusappropriately in the laboratory is called _____ Answer: Instrumentation FBQ7: Apparatus that arc basically used for determining the melting points of substances are called ____________ Answer: melting point tubes FBQ8: The Beckman thermometer IS used in the Beckman·s apparatus for dctem1inmg____ of a substance Answer: Freezing point FBQ9: _____ is an instrument that can be used to measure the strength of an acid or a base Answer: pH meter FBQ10: A homogenous materials that contain only one substance is called a ___________ Answer: pure substance FBQ11: Constituents in a solution can be separated by applying the principle of ___________ Answer: Equilibrium Fill in the Blank (FBQs) 11: The process of separating a pure substance from a solution is called _______ Answer: crystallization FBQ13: In a gas. the molecules on the average are separatedby large ______ distances Answer: Intermolecular FBQ14: -______is a state of matter that does not have a definite shape nor volume Answer: Gas FBQ15: At constant temperature, the gas law that is most suitable is called _____ law Answer: Boyle’s FBQ16: At constant pressure, properties of gases that undergo changes are _______ Answer: volume and temperature FBQ17: A gas that obeys all the gas laws is called an ______ Answer: ideal gas FBQ18: At high temperature and low pressure, gases tend to undergo phenomena that is called ___________ Answer: Expansion FBQ19: At low temperature and high pressure, gases tend to __________ Answer: Contract FBQ20: The temperature, above which a substances can exist only in gaseous state is called _________ Answer: Critical temperature FBQ21: The mathematical equation for Boyle’s law can be written as ___________ Answer: PV = constant FBQ22: The mathematical equation for Charles law can be written as ________ Answer: V/T = constant FBQ23: A plot showing the variation of volume with temperature at constant pressure is called _ Answer: An isobar FBQ24: An expression for the combined gas law can be expressed as ________ Answer: PV/T = constant FBQ25: The equation of ideal gas can be expressed as ______ Answer: PV = nRT FBQ26: Numerical value of the universal gas constant is ____ J/K/mol Answer: 8.314 FBQ27: The volume occupied by 1 mole of oxygen gas at s.t.p. is ________ dm3  Answer: 22.4 FBQ28: The individual pressure of a gas in a mixture of gases is called ______ Answer: Partial pressure FBQ29: The gas law that consider the total pressure of a gas as a function of the pressures exerted by the individual gases that make up the mixture is __________ Answer: Dalton law of partial pressure FBQ30: For 1 mole of an ideal gas, a plot of PV against T will give a straight line whose slope is equal to __________ Answer: 8.314 FBQ31: The rate at which gases diffuse is inversely proportional to the Square root of their ____________ Answer: Densities FBQ32: The gas law that explain the effusion of gas is ____________ Answer: Graham law FBQ33: Gas molecules confined to a container are in a state of ____________ motion Answer: Constant FBQ34: At relatively low pressure, there are no ___________ forces between gas molecules Answer: Intermolecular FBQ35: _________ of a gas is proportional to the mean kinetic energy of the molecules in a gas Answer: Absolute temperature