Why are liquids and gases called as fluids
a) Define interconversion of states of n
b) Why do solids, liquids and gases
di
their physical state?
(c) Under what conditions do solids,
and gases change their state ?
Give reasons
(a) When a stone is dipped in a glass cor
some water the level of water, rises b
Answers
Explanation:
9th
Chemistry
Matter - Nature and Behaviour
Solid , liquid and gaseous states
Interconversion of States o...
Interconversion of States of Matter
VAPOURISATION - DEFINITION
Vaporization of an element or compound is a phase transition from the liquid phase to vapor.
Boiling point is the temperature at which liquid changes to vapor. Examples: Boiling of water.Water changes to water vapor at 100
0
C which is melting point of water.
FREEZING - DEFINITION
Freezing, or solidification, is a phase transition in which a liquid turns into a solid when its temperature is lowered below its freezing point.Freezing point is the temperature at which liquid changes to solid
Liquid water turning to ice is an example of freezing.
Freezing point of water is 0
0
C
SUBLIMATION - DEFINITION
Sublimation is the transition of a substance directly from the solid to the gas phase without passing through the intermediate liquid phase.
MELTING POINT - DEFINITION
The temperature at which a given material changes from a solid to a liquid, or melts is called as its melting point. Example : Ice melts at 32
o
Fahrenheit or 0
0
Celsius.
VAPORISATION - EXAMPLE
Conversion of liquid state in the gaseous state in water is called vaporisation.
INTERCONVERSION OF THREE STATES OF MATTER - DIAGRAM
concept
CHANGE OF STATE OF MATTER - DEFINITION
1. States of matter are inconvertible by applying Heat and pressure to them.
2. When solids are heated the inter molecular force of attraction between particles decreases and they converts into liquids.
3. Liquids on further heating converts into gases .
4. Gases are invisible , do not have any fixed shape and volume because inter molecular force of attraction become zero.
INTERCONVERSION OF MATTER - DEFINITION
The state of matter are inter convertible. The state of matter can be changed by applying pressure and temperature .
SUBLIMATION - DEFINITION
The change from solid state to vapour state without passing through the liquid state is called sublimation and the substance is said to sublime. Dry ice (solid CO
2
) and iodine sublimes.
Answer:
The answer is-
Explanation:
liquids and gas particles have spaces between them and also have weak forces of attraction between the particles. So why liquids and gases can flow easily that is known as fluids.
(a) Interconversion of states of matter means change of state of the matter. The state of the matter is changed through many ways - heating, cooling, etc.
(c) solids change their stat through heating and gases change their state through cooling.
(d) so why because stone takes some of the space of liquid water by making the water level high