Chemistry -Important One Liners 1- The most important ore of aluminium is bauxite 2- An alloy used in making heating elements for electric heating devices is nichrome 3- German silver is an alloy of zinc, copper and nickel 4-Balloons are filled with helium 5- The most abundant metal in the earth’s crust is aluminium 6-The … Read more
Chemistry -Important Terms 1-Antacids -Used for the treatment of acidity – Examples are Eno, & Milk of magnesia [Mg(OH)2] 2-Analgesics – decreases the pain without causing unconsciousness. These are also known as ‘Pain Killers’ -Examples are Asprin, Analgin, seridon etc. 3-Antiseptics -They are applied on living tissues to kill or prevent the growth of micro-organisms … Read more
Chemistry -Important Basics A- Matter 1-Anything that exhibits inertia is called matter. 2- The quantity of matter is its mass. B- Mixture- 1-It is formed by physical combination of two or more pure substances in any ratio. 2-Homogeneous mixtures are those whose composition for each part remains constant. Examples are Aqueous and … Read more
Chemistry 1-The small molecular building units are called Monomers 2- Bases are chemical compounds that taste bitter, turn litmus blue and feel slippery 3-Liquified Petroleum Gas is a mixture of hydrocarbons containing three or four carbon atoms, such as propane, butane and pentane. 4-The substance, which produce heat and light on combustion are called fuels. … Read more
Chemistry 1-In Periodic table vertical columns are called Groups 2-Alkali metals are reactive metals 3-Unreactive non metals are called Noble gases 4-Protons and Electrons are electrically charged 5-The relative charge of Proton and Electron is +1, -1 6- What is atomic number of an atom ? Ans- Number of protons 7- What is the mass … Read more
Chemistry 1-Which metal is present in Sindur (the sacred material of Hindus) ?Answer: Lead 2-Which is the Alkali metal used in photovoltaic cell ?Answer: Cesium 3-Which is the only liquid nonmetal ?Answer: Bromine 4-The first metal used by man was _____ ?Answer: Copper 5- Which metal is present in Insulin ?Answer: Zinc 6-Which metal is … Read more
Chemistry Terms -Glossary 1-precision – How close the results of multiple experimental trials are 2-protonation – the addition of a proton (H+) to an atom, molecule, or ion 3-proton – a positive unit or subatomic particle that has a positive charge 4-photon – a carrier of electromagnetic radiation of all wavelength (such as gamma rays … Read more
Chemistry Terms -Glossary 1- melting – The phase change from a solid to a liquid 2-methylene blue – a heterocyclic aromatic chemical compound with the molecular formula C16H18N3SCl 3-microcentrifuge – a small plastic container that is used to store small amounts of liquid 4-molecule – a chemically bonded number of atoms that are electrically neutral … Read more
Chemistry Terms -Glossary 1-heat – energy transferred from one system to another by thermal interaction 2-halogens – Group 7 on the Periodic Table and are all non-metals 3-ionization -The breaking up of a compound into separate ions. 4-indicator – a special compound added to solution that changes color depending on the acidity of the solution; … Read more
Chemistry Terms -Glossary 1-electrolyte – a solution that conducts a certain amount of current and can be split categorically as weak and strong electrolytes. 2-electromagnetism – fields that have electric charge and electric properties that change the way that particles move and interact 3-electron – a subatomic particle with a net charge that is negative … Read more