Chemical Reactions and Equations
Burning of magnesium ribbon in air forms a white powder called ___.
A reaction in which two or more substances combine to form a single product is called a ___ reaction.
The chemical formula of quicklime is ___.
The chemical formula of slaked lime is ___.
Reactions in which heat is released along with the formation of products are called ___ reactions.
Thermal decomposition of calcium carbonate produces calcium oxide and ___ gas.
On heating lead nitrate, brown fumes of ___ gas are evolved.
During the electrolysis of water, the ratio of hydrogen and oxygen gases collected by volume is ___:1.
When an iron nail is dipped in copper sulphate solution, the blue color of the solution changes to ___.
An insoluble substance formed during a chemical reaction is called a ___.
The process of gain of oxygen or loss of hydrogen by a substance is called ___.
Reactions in which oxidation and reduction occur simultaneously are called ___ reactions.
The black coating formed on silver articles when exposed to air is due to the formation of ___.
Chips manufacturers usually flush bags of chips with ___ gas to prevent rancidity.
A chemical equation is balanced to satisfy the law of conservation of ___.
Respiration is considered an ___ reaction because heat energy is released during the process.