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Summary
In a physical change the shape, size, appearance or state of a substance may alter, but it is a temporary change, which is usually reversible. There is no new substance formed, no change in the mass of the substance and no energy changes are involved. In a chemical change, new substances are f..
Definition
If a ray rotates about the starting initial position, in anticlockwise direction, comes back to its original position after 1 complete revolution then it has rotated through 360 o . 1 complete rotation is divided into 360 equal parts. Each part is 1 o . Each part (1 o ) is divided into 60 equal par..
If a ray rotates about the starting initial position, in anticlockwise direction, comes back to its original position after 1 complete revolution then it has rotated through 360 o . 1 complete rotation is divided into 360 equal parts. Each part is 1 o . Each part (1 o ) is divided into 60 equal par..IUCN Red List Categories
IUCN Red List Categories - The IUCN Red List is a catalogue of taxa that are facing the risk of extinction. The red list aims to impart information about the urgency and scale of conservation problems to the public and policy makers. The use of the Red List are i) Developing awareness about the imp..
Physical and Chemical Changes Summary
Summary - In a physical change the shape, size, appearance or state of a substance may alter, but it is a temporary change, which is usually reversible. There is no new substance formed, no change in the mass of the substance and no energy changes are involved. In a chemical change, new substances ..
Angles
>Recall that the union of two rays forms an angle. In the figure, observe the different types of angle..
>Recall that the union of two rays forms an angle. In the figure, observe the different types of angle..Acid-base indicator behaviour
The mechanism of acid-base indicator was developed by Ostwald, which offered an explanation for the colour change with change in pH. All acid-base indicators are weak organic acids or bases, which possess different colours in unionized and ionized states. If the indicator acid is represe..
The mechanism of acid-base indicator was developed by Ostwald, which offered an explanation for the colour change with change in pH. All acid-base indicators are weak organic acids or bases, which possess different colours in unionized and ionized states. If the indicator acid is represe..Sets Summary
A set A is said to be a proper subset of set B if A is a subset of B and A is not equal to B. If A is a proper subset of B, then we write A B. In order to show that A B it is sufficient to show that each element of A is in B and there is at least one element in B, which is not in A. Set Operations ..
A set A is said to be a proper subset of set B if A is a subset of B and A is not equal to B. If A is a proper subset of B, then we write A B. In order to show that A B it is sufficient to show that each element of A is in B and there is at least one element in B, which is not in A. Set Operations ..Race to the Moon
. This first space shuttle was launched in 1981. Space Shuttle The permanent manned space station called Mir was launched by the Soviet Union in 1986. Since then many crew have manned this space station and conducted experiments in space. The year 1997 marked the return to the red planet...
. This first space shuttle was launched in 1981. Space Shuttle The permanent manned space station called Mir was launched by the Soviet Union in 1986. Since then many crew have manned this space station and conducted experiments in space. The year 1997 marked the return to the red planet...See what our Users say :
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