6. Below is an outline for the phase diagram for carbon tetrachloride. Label all of the following on the diagram: y-axis & x-axis with appropriate units; gas, liquid and solid phases; triple and critical points. Then answer the questions that follow. Describe what happens when a sample of carbon tetrachloride is heated at constant pressure of а. 0.75 atm from 248K to 254K. Draw an arrow that represents this. 1 b. What phases are present at the point on the graph labeled b? 249.0 250,3

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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.