Which statement best describes all physical separation methods? A) they cause a change in the physical state (solid, liquid, gas) of substances B) they cause chemical changes to substances in a mixture C) they use differences in physical properties of substances D) they always use water
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.
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As a result of a physical change, a mixture is created. Therefore, a mixture can be broken down into its constituent parts using specific physical methods or techniques in order to separate the mixture's constituents.
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