Frank ICSE Solutions for Class 9 Chemistry – Practical WorkPAGE NO :170 Solution 1: On heating certain solids they don’t melt and directly get converted to their gaseous form, this process of direct conversion of solids to their gaseous form is called as…

Frank ICSE Solutions for Class 9 Chemistry – Atmospheric PollutionPAGE NO :158 Solution 1: Acid rain is the rain that has an excessive amount of acid in it than that of normal. Two air pollutants that cause acid rain are-Oxides of nitrogenOxides of sulph…

Frank ICSE Solutions for Class 9 Chemistry – Study of the First Element – HydrogenPAGE NO :146 Solution 1:(a) Symbol of hydrogen is ‘H’ and its molecular formula is H2.(b) 2 H means 2 atoms of hydrogen while H2 means one molecule of hydrogen.(c) Lavoisi…

Frank ICSE Solutions for Class 9 Chemistry – Atomic StructurePAGE NO :113 Solution 1: Solution 2: Solution 3:(a) Mass of an atom – Protons and neutrons(b) Size of an atom – ElectronsSolution 4: Three fundamental particles of an atom are-ProtonElectronN…

Frank ICSE Solutions for Class 9 Chemistry – WaterPAGE NO :96 Solution 1: The molecular formula of water is H2O, this shows that water is not an element but it is a compound made up of two elements hydrogen and oxygen  combined in a fixed ratio, i.e., 1…

Frank ICSE Solutions for Class 9 Chemistry – Physical and chemical changesPAGE NO :74 Solution 1: A physical change is a temporary change in which no new substance is formed and the composition or identity of the substance is not altered although certai…

Frank ICSE Solutions for Class 9 Chemistry – The Language of ChemistryPAGE NO :56 Solution 1: Symbol – It is the short form or abbreviation used for the name of an element. It represents one atom of that element. Formula – Formula of a compound represent…

Frank ICSE Solutions for Class 9 Chemistry – Elements, Compounds and MixturesPAGE NO :41 Solution 1:Elements: An element is a pure substance which can neither be broken down into simpler substances nor formed from two or more simpler substances by any kn…

Frank ICSE Solutions for Class 9 Chemistry – Study of Gas LawsPAGE NO :21 Solution 1: An ideal gas can be characterized by three state variables:Absolute pressure (P),Volume (V), andAbsolute temperature (T).Solution 2: Solution 3: Solution 4: Solution…

Frank ICSE Solutions for Class 9 Chemistry – Matter and its Composition: Law of Conservation of Mass PAGE NO :8 Solution 1: Matter is anything around us which occupies space and has mass. Example- Coal, Copper, Water, Oxygen, Kerosene Key: Matter occup…