The substance present in another substance in smaller amount is called___________.
Constituents
Purity
impurity
elements
______________has a fixed melting or boiling point.
pure substance
Mixtures
impure substance
complexes
Mixtures in which particles of the substances present can be easily seen are called______________.
pure substances
heterogeneous mixture
homogeneous mixture
Compounds
The process of separating grain from husk and hay with the help of wind is called_________.
hand picking
winnowing
seiving
sublimation
____________is used for obtaining a pure crystalline substance from its impure sample.
centrifugation
Filtration
Evaporation
Crystallisation
A single substance of a definite composition is called a _____________.
element
compound
_________of a substance can be checked by measuring or examining some of its characteristic properties.
Constituent
Elements
Reactivity
The various substances present in a mixture are called_____________.
Components
compounds
molecules
___________is used for separating solid constituents of a mixture which differ in their sizes.
sieving