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Posted by Manish Yadav Manish Yadav 3 days, 17 hours ago
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Yogita Ingle 3 days, 23 hours ago
|
Sl. No. |
Differentiating Property |
Compound |
Mixture |
|
1 |
Definition |
Compound are substances which are formed by chemically combining two or more elements. |
Mixtures are substances that are formed by physically mixing two or more substances. |
|
2 |
Types |
Compounds are three types which are covalent compounds, metallic compounds and ionic compounds.
Note: Compounds can also be classified as organic or inorganic compounds based on the presence of carbon atom. |
Mixtures are mainly of two types i.e. homogenous mixtures and heterogeneous mixtures. |
|
3 |
Substance Category |
Compounds fall under pure substances. |
Mixtures fall under impure substances. |
|
4 |
Composition Details |
The chemical composition of compounds is always fixed. |
A mixture can have a variable composition of the substances forming it. |
|
5 |
Nature |
Compounds are always homogeneous in nature |
Mixtures can either be homogeneous or heterogeneous in nature. |
|
6 |
Separation of Constituents |
The constituents of a compound can only be separated by either chemical or electrochemical methods(like extraction). |
The constituents of a mixture can be easily separated by physical methods (like filtration). |
Posted by Shreya Anand 4 days, 8 hours ago
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Yogita Ingle 3 days, 23 hours ago
Division of labour in multicellular organisms -
- Multicellular organisms are made of more than one cell.
- Each cell of their body carries out specific function.
- Various functions of the body are carried out by different tissues or rather organ systems.
- As each cell is assigned with its specific task, it is said that labour is divided in multicellular organisms.
Posted by Aditya Rathore 4 days, 16 hours ago
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Aaryan Vats 4 days, 14 hours ago
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Aaryan Vats 4 days, 14 hours ago
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Shubham Meena 4 days, 15 hours ago
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Posted by Sureshchand Gupta 4 days, 19 hours ago
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Yogita Ingle 4 days, 16 hours ago
An object is said to be in motion if it changes its position with respect time and observer.
An object is said to be at rest if it does not changes its position with respect time and observer.
MOTION AND REST ARE RELATIVE TERMS.
That means it all depends upon the observer who is observing the object.
Example:
1. A person standing in a moving bus is at rest with respect to bus and is in motion with respect to observer on the ground.
2. A girl swinging in garden is in motion with respect to persons moving in garden and at rest with respect to swing.
Posted by Gopal Bhandari 4 days, 22 hours ago
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Gopal Bhandari 4 days, 21 hours ago
Posted by Shruti Tyagi 4 days, 22 hours ago
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Posted by Gurdas Gill 5 days, 22 hours ago
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Meghna Thapar 5 days ago
The characteristic amount of energy absorbed or released by a substance during a change in its physical state that occurs without changing its temperature is known as latent heat. ⭕The two types of latent heat are Latent heat of fusion and latent heat of vapourization.
Posted by Shivani Choudhary 5 days, 23 hours ago
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Yogita Ingle 5 days, 22 hours ago
- We get the smell of our favourite food sitting in the drawing room even when the food is being cooked in kitchen. The vapor coming out from the food reaches to us because of diffusion in air and we get the smell of food.
- We get the smell of burning incense stick sitting far from it. When an incense stick is burnt, the incense present in it vaporizes because of heat. The vapor coming out from the incense stick mixes with air and reaches to us.
- In similar way we sense the good or bad smell from a distance.
- When sugar is added in water, it is mixed because of the diffusion. The particles of sugar collide with the particles of water because of their continuous movement. And finally they are mixed together because of diffusion.
- Carbonated drinks are prepared by the diffusion of gas in water. We notice a hiss sound when the cap of bottle of a carbonated drink is open, the hiss sound comes because of the diffused gas coming out of water. Soda, Soft drinks (coca-cola) etc. are the carbonated drinks and prepared mainly because of the diffusion of carbon dioxide in water.
- Aquatic animals take dissolved oxygen in water while breathing. Aquatic plants synthesize their food under water because of the dissolved carbon dioxide in water. These gases dissolved in water because of the diffusion.
Posted by Khushbu Kumari 6 days, 3 hours ago
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Meghna Thapar 5 days ago
According to the law of conservation of momentum, the sum of momenta of two objects before collision is equal to the sum of momenta after collision, provided there is no external unbalanced force acting on the objects.
Suppose two balls A and B, of masses mA and mB are travelling in the same direction along a straight line at different velocities uA and uB. And there are no other external unbalanced forces acting on them. Let uA > uB and the two balls collide with each other. During collision which lasts for a time t, the ball A exerts a force FAB on ball B and the ball B exerts a force FBA on ball A.
Suppose vA and vB are the velocities of the two balls A and B after the collision, respectively.
The momenta of ball A before and after the collision are mA uA and mA vA. The rate of change of its momentum (or FAB, action) during the collision will be
mA (vA - uA)/t
Similarly, the rate of change of momentum of ball B (= FBA or reaction) during the collision will be
mB (vB - uB)/t.
According to the third law of motion, the force FAB exerted by ball A on ball B (action) and the force FBA exerted by the ball B on ball A (reaction) must be equal and opposite to each other. Therefore,
FAB = – FBA
or
mA (vA - uA)/t = -mB (vB - uB)/t. This gives,
mA uA + mB uB = mA uA + mB vB
where mA and mB are masses of the bodies, u1 and u2 are initial velocities of the bodies and v1 and v2 are final velocities of the bodies.
Posted by Md Shafique 6 days, 17 hours ago
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Yogita Ingle 6 days, 1 hour ago
- Consist of live unspecialized cells having thin cell wall.
- They are loosely packed and have large intercellular space (space between the cells).
- Provides support to the plant and present in all parts like roots, stems, leaves, fruits and seeds.
- Storage of food (eg. Fruits) and water (in stems eg. cactus) is the main function.
- Sometimes, these tissues also contain chlorophyll and perform photosynthesis, and known as chlorenchyma.
- In case of aquatic plants, parenchyma is modified into aerenchyma.
- Aerenchyma is the tissues having large air cavities which provides buoyancy to the plants and help them to float.
Posted by Tanish Sukhralia 6 days, 17 hours ago
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Posted by Mohammed Ayan Khan 6 days, 17 hours ago
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Yogita Ingle 6 days, 17 hours ago
Displacement is defined as the change in position of an object. It is a vector quantity and has a direction and magnitude. It is represented as an arrow that points from the starting position to the final position. For Example- If an object moves from A position to B, then the object’s position changes. This change in position of an object is known as Displacement.
Posted by Shaswat Sharma 6 days, 21 hours ago
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Yogita Ingle 6 days, 17 hours ago
It is a chemical reaction in which you mix two solutions of two ionic substances and a solid ionic substance (a precipitate) forms.
For example, precipitation occurs when a part of the atmosphere saturates itself with water vapour and when the right temperature comes its condenses and precipitates. The two processes which make the air saturated are the cooling of air molecules and the addition of water vapour.
Posted by Sourabh Singh 6 days, 23 hours ago
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Yogita Ingle 6 days, 16 hours ago
Amphibians are those organisms which live on both land and in water. Bryophytes are called amphibians of the plant kingdom because these plants though live in soil but they need water for sexual reproduction. The sperm of bryophyte (antherozoids) are flagellate and need water to swim to the eggs. In other words, as these plants need water for reproduction unlike other plants, they are called as amphibians.
Posted by Sourabh Singh 6 days, 23 hours ago
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Meghna Thapar 5 days ago
The speed of water range from 1450 to 1498 meters per second in distilled water and 1531 m/s in sea water at room temperatures (20 to 25 °C).
Posted by Milrose Manoj 1 week ago
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Yogita Ingle 1 week ago
Cells are called the structural and functional unit of life because all the living organisms are made up of cells and all the functions that take place inside the organisms are performed by cells.
Posted by Sejal Parmar 1 week, 1 day ago
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Yogita Ingle 1 week ago
The sky appears blue when viewed from Earth because of scattering of light particles I.e blue light gets refracted wherever there is atmosphere. As there is no atmosphere in space, astronauts see the actual colour of sky I.e black.
Posted by Himanshu Sharma 1 week, 1 day ago
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Shubh Varshney 1 week ago
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