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.
The ratio of specific charge of a proton and alpha particle is
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?
Describe an activity to show that particles of matter are continuously moving.
When 3.2 g of Sulphur is vaporized at 450oC and 723 mm pressure, the vapors occupy a volume of 780 ml. What is the molecular formula of sulphur vapours under these conditions? Calculate the vapor density also.
(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
what is matter
do an activity to show that particles of matter are very small beyond our imagination
Name two gases which are supplied in compressed form in homes and hospitals
write full form of the follwoling
why do trees acquire more leaves during summer?
The temperature remains constant during the boiling of water even though heat is supplied continously.Why?
1. Why should curd and sour substances not be kept in brass and coppervessels?
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.
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