As viewed from Earth, most stars appear to move across the sky each night because A stars orbit around Earth B Earth rotates on its axis C stars revolve around the center of the galaxy D Earth revolves around the sun
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
As viewed from Earth, most stars appear to move across the sky each night because
stars orbit around Earth
Earth rotates on its axis
stars revolve around the center of the galaxy
Earth revolves around the sun
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