Chemistry

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

Chemistry Terms  -Glossary 1-Catalyst – a chemical compound used to change the rate (either to speed up or slow down) of a reaction, but is regenerated at the end of the reaction. 2-chemical reaction – the change of one or more substances into another or multiple substances 3-compound – a substance that is made up … Read more

Chemistry Terms -Glossary Barometer – a device used to measure the pressure in the atmosphere Bases -In chemistry, bases are substances that, in aqueous solution, are slippery to the touch, taste bitter, change the color of indicators (e.g., turn red litmus paper blue), react with acids to form salts Biochemistry, sometimes called biological chemistry, is … Read more

Glossary -Chemistry Terms 1-Absolute zero – a theoretical condition concerning a system at zero Kelvin where a system does not emit or absorb energy (all atoms are at rest) 2-acid – a compound that, when dissolved in water, gives a pH of less than 7.0 or a compound that donates a hydrogen ion 3-acid dissociation … Read more