10 examples of evaporation in daily life with explanations?

why is evaporation called a surface phenomena

why do the doctors advise to put strips of wet cloth on thr forehead of a person having high fever?

why does steam cause more severe burns than boiling water

liquids have lower density than water but ice floats on water why

Differentiate between gas and vapour..

why does the temp. remains constant during the melting of ice even thoug heat is supplied contiously?

why evaporation is called surface phenomenon?

 Describe an activity to show that particles of matter are continuously moving.

explain why,ice at 0 degree celcius  more effective in cooling than water at the same temperature?

compare in tabular form, the properties of solid,liquids,and gases with respect: i)shape ii)volume iii)commpressibilty iv)diffusion v)fluidity or ridgidity

why do we see water droplets on the outer surface of a glass containing ice cold water

 what are the characteristics of the particles of matter???

Name two gases which are supplied in compressed form in homes and hospitals

write full form of the follwoling

LPG

CNG

Explain why we can easily move our hand in air but to do the same through a plank of wood, we need a karate expert.

How to show the sublimation of ammonium chloride???

Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy, and density. Also, please compare these properties with solids, liquids and gases.

 Define latent heat of fusion

how can show that particles matter have spaces between them?

1. Why is ice at 273 K more effective in cooling than water at the same temperature?
2. What produces more severe burns, boiling water or steam?

Explain why:

(a)air is used to make inflate tyres.

(b)steel is used to make railway lines.

why does the temperature of a substance remain constant during its melting point or boiling point ?

activity to show that gases are highly compressible than solids and liquids ?

examples of application of evaporation used in our daily life

do an activity to show that particles of matter are very small beyond our imagination

why do trees acquire more leaves during summer?

1. Why should curd and sour substances not be kept in brass and copper
vessels?

1. Is matter continuous or particulate in nature?

give reason water at room temperature is a liquid

Explain the interconversion of 3 states of matter in terms of force of attraction and kinetic energy of molecules.

A wooden table should be called a solid give reason

(a) Tabulate the differences in the characteristics of states of matter.

(b) Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy, and density.

water as ice has a cooling effect, where as water as steam may cause severe burns. Explain these observations.

is rubber band a solid.then why it changes its shape on streaching

name the solute and solvent of tincture of iodine

what type of clothes should we wear in summer why

Explain with the help of activity the particulate nature of matter.

describe an activity to show that matter is composed of particles

how to download exam idea book for class9

What is the difference between Gas and Vapour?

State 2 characteristics of matter demonstrated by:

(a) diffusion

(b) brownian motion

DIFFERENTIATE BETWEEN EVAPORATION AND BOILING.

GIVE 2-3 POINTS

The valency of sulphur in SO2 and SO3 is 4,6. Pls explain how?

4 substances that sublime

How will you justify that ice , water and steam are the three states of a substance and not different substances?

Why the boiling is known as the bulk phenomenon ?

why should we wear cotton clothes in summer?

ICE AT 0 DEGREE CELCIUS APPEARS COLDER TO THE MOUTH THAN WATER AT 0 DEGREE CELCIUS.WHY?

how does applying pressure help in liquefaction of a gas?