Explanation : When a substance is made up of two or more atoms which are from different elements then they are called as compound. which are chemically inseparable. But if the atoms are combining with the atoms of the same element then it is called as element.
Answer 2) : Option A) Compound
Explanation : The compound is formed when atoms from different elements and get combined to form a new substance. It cannot be easily physically separated. It can be chemically separated. A molecule is formed when two or more atoms join together chemically. A compound at least two different elements.
<span>Water is formed when two hydrogen atoms bond to an oxygen atom. When a substance is made of two or more atoms like this, we call it AN ELEMENT
</span><span>Water is formed when two hydrogen atoms bond to an oxygen atom. When a substance is made of two or more atoms like this, we call it A COMPOUND</span>
When a temperature increases particles tend to collide with each other often as they gain kinetic energy making them collide much more often and they'll collide with more energy due to the increase of kinetic energy
