Select Board & Class
write a paragraph on 'unity in diversity'
why some metal loses their shine and apperance dull ?
name two gases insoluble in water
What is sonorous property of metal?
why do we need to group materials
name any five objects which can be made from more than one material
some examples of lustrous material?
the things which float in water will they float in oil or kerosene also
Why is sugar solluble but sand is not soluble in water? what is the difference in the properties?? please help me
Metals are lustrous but the iron rod used in construction does not shine. Why?
what is buoyant force
What is lusture
items known to you that float on water. Check and see if they will
float on oil or kerosene.
in what ways is all matter alike?
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?
GIVE ME SOME EXAMPLES OF SOLUBLE AND INSOLUBLE GASES AND LIQUIDS
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
name any four materials that can be used to make school bags.
Name five gases insoluble in water??
Why do we need to classify the objects?
Can water cause molecules in a piece of chalk to break apart how can you say this
Discuss the solubility of solids, liquids and gases in water.
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 kerosene does not mix with water
what is talcum powder. does is dissolve in water?
why does kerosene not dissolve in water
how can wood float in water i think it's heavyer than water is it hollow??
differenciate between hard and soft material
Which of the following is an endothermic reaction?
a. formation of curd from milk
b. production of gas when quicklime is added to water
c. opening of a soda bottle with production of gas
d. evaporation of water
why is diamond non metal?
what are the advantages of synthetic fibre
What are sonorous materials?
is fog and mist transparent, translucent or opaque? why?
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
What is the formula of alum?
objects which can be made from wood.
how to make paper translucent..?
what is material ?
Is there some method that we dissolve kerosene in water? and can you tell me the method?
There are diffrent reactions of materials with water.Some are soluble some are insoluble. It is not nesecary for everything to be soluble or everything to be insoluble
what are conductors and insulators?
1. 1. Classify objects used during breakfast into edibles non-edibles.
why do es an empt y cooking gas cylinder feel lighter than a filled cylinder?
In what ways is all matter alike
What is a chemical reaction? Give the shortest defination.
what are translucent objects
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