A compound containing sodium and chlorine is
Common salt
Silicon
Copper sulphate
Water
The smallest particle of an element or a compound which can exist independently and possess its characteristic properties is called its
Atoms
Molecule
Compounds
Elements
__________ is a compound made up of hydrogen and oxygen combined in the ratio 2:1 by volume.
Carbondioxide
Sand
Hydrogen peroxide
______________ is a homogeneous solid in solid mixture.
Sugar in water
Alloy
Air
Water in oil
Ethyl alcohol + water is a homogeneous ______________ mixture.
Gas in liquid
Solid in liquid
Liquid in liquid
Liquid in solid
___________ is the smallest particle which take part in a chemical reaction.
Molecules
__________ of an element is an abbrevation for its full name.
Symbol
Chemical properties
Physical properties
Reactivity
___________ are the substance present in a mixture.
Constituent
__________ are also known as chemical compounds.
molecules
Element
________________ are classified into suspensions, colloids and emulsions.
Homogeneous mixtures
Heterogeneous mixtures
