Which graph represents the change in temperature, when it rains on a s..
Which graph represents the change in temperature, when it rains on a sunny day? => Graph 3 or Graph 2 or Graph 1 or None of the above..
Global Environmental Changes Introduction
. Earth's atmosphere in its present form, is evolved and even now being influenced by earth's movement on its axis as well as sunlight. These two parameters decide what type of atmosphere we have now - its composition as well as the total height of atmospheric cover around the earth. Such an atmosp..
The price of a share at the beginning of trading was $633. At the clos..
The price of a share at the beginning of trading was $633. At the close of trading, the price of the same share was $493. By how much did the price go down at the end of the day? => $115 or $140 or $190 or $215..
Chemical Change
A change in which the composition of a substance is altered is called as chemical change. As a result, the original properties get changed and one or more new substances are forme..
Physical Change
A physical change is one in which the shape, size, appearance or state, of a substance may alter, but its chemical composition remains same. No new substance is formed. It is usually a change, which is reversible. By reversing the process, the original substance ..
Physical Change
A physical change is one in which the shape, size, appearance or state, of a substance may alter, but its chemical composition remains same. No new substance is formed. It is usually a change, which is reversible. By reversing the process, the original substance can be..
Physical Change
A physical change is one in which the shape, size, appearance or state, of a substance may alter, but its chemical composition remains same. No new substance is formed. It is usually a change, which is reversible. By reversing the process, the original substance can b..
Chemical Change
Chemical Change - A change in which the composition of a substance is altered is called as chemical change. As a result, the original properties get changed and one or more new substances are formed. Iron is greyish white metal and conducts electric..
Chemical Change
A change in which the composition of a substance is altered is called as chemical change. As a result, the original properties get changed and one or more new substances are formed. Iron is a greyish white metal and conducts electricity. It is attracted by a..
Energy can neither be created nor destroyed although it may be changed from one form to another.
From this statement it follows that total energy of the universe, For e.g., system and surroundings taken together as always constant during any physical or chemical process. In order to derive mathematical expression for first law of thermodynamics let us assume that a system having internal ener..
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