Use the phase diagram for methane, CH4, shown in the following Figure to answer the following questions. 10 Supercritical fluid 102 Liquid 10 Solid 1 10-1 Gas 10-2 10-3 10-4 -200 -100 100 Temperature (°C) What is the normal boiling point and melting point of methane? Liquid methane does not exist under what pressure? Pressure (atm)
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.
The phase diagram of methane given is,
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