Action of Heat on SaltsHeating a salt may cause it to decompose. The decomposition may result in (a) a colour change (b) evolution of a gas (c) liberation of water vapourGases such as carbon dioxide, sulphur dioxide, nitrogen dioxide, ammonia or oxygen …

What is the most common type of plastic?Plastics:Plastics are made from the products of cracking of petroleum fractions such as alkenes molecules through addition polymerisation.Plastics are the largest group of synthetic polymers with the following pro…

Constructing ionic equations using the continuous variation methodThe ionic equation for the formation of an insoluble salt can be constructed if we know the number of moles of cation and anion reacted together to form 1 mole of the insoluble salt.For ex…

Chemical BondingWe know that different elements have different atomic numbers and electronic configurations. The properties of atoms depend upon their electronic configurations. Some atoms are more reactive than others. Noble gas (He, Ne, Ar, Kr, Xe and…

Can Matter Change its StateChange of state of matterA substance may exist in any of the three states of matter (i.e. solid, liquid or gas) depending upon the conditions of temperature and pressure.By changing the conditions of temperature and pressure, …

What are the physical properties of ammonia?Ammonia is a covalent compound with the following physical properties: Ammonia is very soluble in water, but it ionises partially in water to form a weak alkali. A 0.1 mol dm-3 ammonia solution has a pH of abo…

Selina Concise Chemistry Class 9 ICSE Solutions Atomic Structure and Chemical BondingICSE SolutionsSelina ICSE SolutionsAPlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 9 Chemistry Chapter 4 Atomic Structure an…

Selina Concise Chemistry Class 9 ICSE Solutions WaterICSE SolutionsSelina ICSE SolutionsAPlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 9 Chemistry Chapter 3 Water. You can download the Selina Concise Chemistry…

Selina Concise Chemistry Class 9 ICSE Solutions Chemical Changes and ReactionsICSE SolutionsSelina ICSE SolutionsAPlusTopper.com provides step by step solutions for Selina Concise ICSE Solutions for Class 9 Chemistry Chapter 2 Chemical Changes and Reacti…

Frank ICSE Solutions for Class 10 Chemistry – Organic CompoundsPAGE NO : 247 Solution 1: Solution 2: Solution 3: Solution 4: Solution 5: Solution 6: Solution 7: Solution 8: Solution 9: Solution 10: Solution 11: Solution 12: Solution 13: Solution 14:…