Chemistry Holiday Homework

Antimony is a

• metal

• non-metal

• metalloid

• noble gas

A molecule is the smallest unit of a

• element

• compound

The substances which form mixtures are called

• a)components

• b)constituents

• both a and b

• none of the above

A special device,known as the ____________,is used to seperate two immiscible liquids

Example of evaporation is

• separating salt and sea water

• separating clean water from muddy water

• none of the above

Liquids that do not dissolve in each other are called _____________.

Example of sublimation

• mixture of sand and small stones

• mixture of common salt and ammonium chloride

• mixture of chalk powder and water

• all of these

Azeotropes is a type of ___________________mixture which boils at a constant temperature at a certain composition.

• liquid-liquid

• solid-liquid

• solid-solid

• none of the above

The molecular formula of sodium hydroxide is