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प्रश्न
Define the following term of Matter .
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उत्तर
Matter—Anything that has mass and occupies space is called matter.
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संबंधित प्रश्न
Fill in the following blank with suitable words :
The best evidence that the particles of matter are constantly moving comes from the studies of ................. and ...................
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
What are the characteristics of matter?
What is meant by saying that metals are lustrous ?
What are the two types of pure substances? Give one example of each type.
What is the other name for impure substances ? Give two examples of impure substances.
Give reason why copper metal is used for making electric wires.
Classify the following into elements, compounds and mixtures :
arble, Air, Gold, Brass, Sand, Diamond, Graphite, Petroleum, Common salt, Sea-water, Chalk
The element which is not common between the compounds called baking soda and soda ash is
The elements which normally exist in the liquid state are :
In the following set of substances, one item does not belong to the set. Select this item and explain why it does not belong to the set :
Hydrogen, Oxygen, Steam, Chlorine
State whether colloidal solutions are homogeneous or heterogeneous.
Name the different types of solutions. Give one example of each.
100 mL of water at room temperature of 25°C is taken in a beaker and a little of solid S is dissolved in it by stirring to obtain a solution X. More and more of solid S is added to the solution with constant stirring, while keeping the temperature of solution constant at 30°C. After some time it is observed that no more solid dissolves in water and at the same time some solid is also left undissolved at the bottom of the beaker.
- The contents of beaker are filtered through a filter paper to obtain solution Y in the form of a filtrate.
- What name is given to solutions like X ?
- What name is given to solutions like Y ?
- What will you observe if the solution Y at 30°C is cooled down to 10°C by keeping the beaker in crushed ice ? Why ?
- What term is used to denote the amount of solid dissolved in 100 grams of water in a solution lie Y ?
Fill in the following blanks with suitable words :
If a mixture contains iron filings as one of the constituents, it can be separated by using a .......................
Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
______ is a smallest particle.
Which of the following statements are true for pure substances?
(i) Pure substances contain only one kind of particles
(ii) Pure substances may be compounds or mixtures
(iii) Pure substances have the same composition throughout
(iv) Pure substances can be exemplified by all elements other than nickel
Define the term matter.
