Study the following phase diagram of Substance X. 1.6+ solid 0.8- liquid gas 200 400 600 temperature (K) Use this diagram to answer the following questions. Suppose a small sample of pure X is held at -178. °C and 0.7 atm. What will be the state of the sample? |(choose one) v Suppose the temperature is held constant at -178. °C but the pressure is decreased by 0.2 atm. what will happen to the sample? (choose one) Suppose, on the other hand, the pressure is held constant at 0.7 atm but the temperature is increased by 220. °C. What will happen to the sample? (choose one) pressure (atm)

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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.