Particle Model of Matter
The process of conversion of a solid state into liquid is called
melting
boiling
freezing
solidifying
melting
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Definite shape, volume, high density and uneasy flow are the physical properties of aA. solid
B. liquid
C. gas
D. water
The particles of the solid
A. spin
B. vibrate
C. move along
D. both a and b
Pollen grains in water were first observed by Scottish scientist
A. Democritus
B. Aristotle
C. Robert brown
D. Albert Einstein
The haphazard movement of particles suspended in a liquid or gas due to the consequence of ongoing bombardment by molecules of a medium is
A. Brownian motion
B. Albert motion
C. Aristotle motion
D. Dalton motion
Change in the state of matter from liquid into solid is known as
A. melting
B. boiling
C. freezing
D. solidifying
The hypothesis that all matters are made up of tiny discrete particles and too small to be seen with a naked eye was given by
A. Democritus
B. Aristotle
C. Robert brown
D. Albert Einstein
An advance microscope which allows us to see tiny discreet articles in matter is called
A. simple microscope
B. compound microscope
C. electron microscope
D. scanning tunneling microscope
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