A physical change<span> in a substance doesn't </span>change<span> what the substance is. In a </span>chemical change<span> where there is a </span>chemical reaction<span>, a new substance is formed and energy is either given off or absorbed.</span>
An atom or molecule with a net electric charge due to the loss or gain of one or more electrons. :)
The element has 83 electrons
Answer:
friction
Explanation:
the resistance that one surface or object encounters when moving over another.
Answer:
Natural Gas is a fossil energy source that formed deep beneath the Earth's surface. It is used in power plants to generate electricity by burning natural gas as their fuel.
Explanation: I hope this helped :)