properties and changes of properties in matter

Reaction with litmus paper - Hydrogen is neutral to litmus. When we introduce wet blue and red litmus paper into a jar of hydrogen, no change of color is notice..

Reaction with litmus paper Hydrogen is neutral to litmus. When we introduce wet blue and red litmus paper into a jar of hydrogen, no change of color is notice..

Magnetic lines of force form closed continuous curves. Outside the body of the magnet, their direction is from north to south pole. The tangent to these lines at any point gives the direction of the magnetic field at that point. No two lines can intersect each other. The lines of forc..

. Cathode rays can ionise gases. Cathode rays can penetrate through thin sheets of aluminium and silver without perforating them. They can produce fluorescence in many substances. When they impinge on a metal of high atomic weight, X-rays are produced. Measurements of their deflection by electric a..

Sulphur dioxide gas exhibits bleaching properties in presence of moisture. It dissolves in water liberating nascent hydrogen. Coloring matter is bleached by reaction with nascent hydrogen. Nascent hydrogen removes oxygen atoms from the coloring matter (reduces coloring..

Physical Properties of Amino acids - Amino acids are colourless, crystalline solids. They are water-soluble high melting solids and behave like salts. The a -carbon atom has 'R' which is a side chain. This side chain is different for different amino acids. The carboxyl and amino groups in..

Is Matter Around us Pure - Physical and Chemical Changes Matter undergoes certain changes as a result of the application of energy. Water from saltpans on the seacoast dry up, leaving behind salt; water from the sea evaporates to from water vapour, which conv..

Properties of solids have been exploited for various new innovations in electronic and magnetic devices like transistors, computers, telephones etc. Properties of the solids mainly depend upon their structure and composition. Three main properties are discussed belo..

Gases, as well as mixture of gases, behave as seen above, with regard to changes in temperature, pressure or bot..

Properties of Gases in Terms of Molecular Motion - Gases, as well as mixture of gases, behave as seen above, with regard to changes in temperature, pressure or both. The following assumptions can be made on the basis of the kinetic theory of gases: A molecule of a gas means the ..