Basic Science
Posted in Basic Science Chemistry Physics

SIMPLE MACHINE

386 ViewsSIMPLE MACHINE  Definition of Simple Machine A machine is a tool or device that makes work easier. It is…

Chemistry
Posted in Chemistry

OXYGEN (O2) PROPERTIES AND USES

802 ViewsOXYGEN (O2) PROPERTIES AND USES   Oxygen (O2) is an active, life-sustaining component of the atmosphere; making up 20% by…

Chemistry
Posted in Chemistry

RUSTING OF IRON

474 ViewsRUSTING OF IRON Corrosion The eating up of metals by the action of air and moisture on their surface…

Chemistry
Posted in Chemistry

WATER AND HYDROGEN

486 ViewsWATER AND HYDROGEN Hydrogen is the simplest element. It is the first element in the periodic table, and it…

Chemistry
Posted in Chemistry

AIR AND COMBUSTION

328 ViewsAIR AND COMBUSTION Percentage of Oxygen in Air We have read that Air consists mainly of molecules of oxygen…

Chemistry
Posted in Chemistry

INDICATORS

256 ViewsINDICATORS Red cabbage juice solution works well instead of universal indicator solution. Making Cabbage Indicator Acid base indicators are…

Chemistry
Posted in Chemistry

AN ALKALI

356 ViewsAN ALKALI Alkali is pronounced like alcohol, with ‘lie’ at the end instead of ‘hol’. An alkali is any…

Chemistry
Posted in Chemistry

ACIDS, BASES AND INDICATORS

540 ViewsACIDS, BASES AND INDICATORS   Introduction  All the elements in nature fall into three classes: metals, non-metals and gases. Non-metals…

Chemistry
Posted in Chemistry

COMPOUNDS AND FORMULA

284 ViewsCOMPOUNDS AND FORMULA  A compound is a pure substance formed by chemically combining at least two different elements. Compounds…

Chemistry
Posted in Chemistry

CONSTITUENTS OF MATTER

322 ViewsCONSTITUENTS OF MATTER   Atoms, Molecules, Elements and Compounds The Atom An atom is the smallest particle of a substance which…