Ex

  Chemistry (NTSE/Olympiad)  

2. Is Matter Around Us Pure

Pure Substances

A pure substance consists of a single type of particles.
Pure substances are always homogeneous.
All the elements and compounds are pure substances because they contain only one kind of particles.
A pure substance cannot be separated into other kinds of matter by any physical process.
A pure substance has a fixed composition as well as a fixed boiling point and melting point.
Ex. Hydrogen, Oxygen, Copper, Gold, Silver.
Pure substances can be divided into two types.
(A) Elements
(B) Compounds

×

NTSE Chemistry (Class X)


NTSE Chemistry (Class IX)


SHOW CHAPTERS

NTSE Physics Course (Class 9 & 10)

NTSE Chemistry Course (Class 9 & 10)

NTSE Geography Course (Class 9 & 10)

NTSE Biology Course (Class 9 & 10)

NTSE Democratic Politics Course (Class 9 & 10)

NTSE Economics Course (Class 9 & 10)

NTSE History Course (Class 9 & 10)

NTSE Mathematics Course (Class 9 & 10)