An element is composed of millions of atoms and a compound is composed of molecules. When an atom reacts with another atom, a molecule is formed.
For example, if sodium reacts with chloride, it forms sodium chloride (Common salt). Here, sodium and chloride are elements and sodium chloride is a molecule. In this way, millions of atoms of sodium reacts with chloride and forms common salt.
Again, when the common salt is mixed with other compounds such as water, it forms a mixture.
Answer:
One of the primary advantages of thermal power is that the generation costs are extremely low. No fuel is needed to generate the power, and the minimal energy needed to pump water to the Earth's surface can be taken from the total energy yield.
Explanation:
Answer:
water
Explanation:
water is 1000 kg/m3 while air is 1.225 kg/m3
The Ptolemaic model of the universe describes the Earth as being at the center, stationary, with the Sun, the Moon, other planets, stars, and EVERYTHING rotating around it. <em>(B) </em>
