Select Board & Class
write a paragraph on 'unity in diversity'
name two gases insoluble in water
why do we need to group materials
What is sonorous property of metal?
What is lusture
name any five objects which can be made from more than one material
the things which float in water will they float in oil or kerosene also
some examples of lustrous material?
why some metal loses their shine and apperance dull ?
1. Rahul performed magic in front of his friends. He placed a beaker filled with water on a table
And asked friends to put an egg into the beaker. All of his friends did the same but each time,
The egg into the water. Then Rahul secretly mixed some white powder in the water and he placed an egg into the beaker. Surprisingly, the egg started floating on water.
a) What could be the white powder ?
b) Why did the egg sink earlier but float later ?
what is buoyant force
items known to you that float on water. Check and see if they will
float on oil or kerosene.
are human beings opaque or translucent?
If there are opaque, why does the torch light pass through our palm when we cover the glass of a torch?
Metals are lustrous but the iron rod used in construction does not shine. Why?
Why do we need to classify the objects?
in what ways is all matter alike?
In which of the following sets is each thing a solid at room temperature?
a) Mercury, Iron , Gold
b) stone, water, cricket ball
c) salt, sugar, cork
d) oxygen, nitrogen, sulphur
GIVE ME SOME EXAMPLES OF SOLUBLE AND INSOLUBLE GASES AND LIQUIDS
name any four materials that can be used to make school bags.
will a shoe float or sink. when i did it myself it floated but my teacher says it sinks. what is the correct answer?
Name five gases insoluble in water??
Can water cause molecules in a piece of chalk to break apart how can you say this
Define density. How is it related to floating and sinking in water?
Hots Questions: Think and answer :
1) You want to take a tumbler to a picnic. You want to crush and throw away the tumbler after use. Name two materials from which such a tumbler can be made.
2) Can water cause molecules in piece of chalk to break apart? How can you say this?
3) Which has greater density-ice or water? How can you say this?
4) Two molecules of a solid are kept some distance apart and the force between them is measured. The solid is then melted to form a liquid. Two molecules of the liquid are now kept the same distance apart and the force between them is measured. Which force will be greater? Explain why.
Why is sugar solluble but sand is not soluble in water? what is the difference in the properties?? please help me
how can wood float in water i think it's heavyer than water is it hollow??
differenciate between hard and soft material
why is diamond non metal?
what is talcum powder. does is dissolve in water?
Is glass lustrous
is fog and mist transparent, translucent or opaque? why?
Discuss the solubility of solids, liquids and gases in water.
what are the advantages of synthetic fibre
What are sonorous materials?
what does ductile , malleable, sonorous mean?
write five difference between metals and non-metals.
why a ship made up of steel floats in sea water but a needle sink
write five advantages of grouping in classifying material
objects which can be made from wood.
how to make paper translucent..?
Is there some method that we dissolve kerosene in water? and can you tell me the method?
what are conductors and insulators?
why do es an empt y cooking gas cylinder feel lighter than a filled cylinder?
In what ways is all matter alike
what are translucent objects
what is earthen pitcher
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