Consider a series of compounds: Methane (CH3), Ethane (CH3 CH3), Propane (CH3 CH2 CH3), Butane (CH3 CH2 CH2 CH3), and Pentane (CH3 CH2 CH2 CH2 CH3). For each compound (a) Indicate whether its molecules are polar or non polar. (b) Indicate predominant type of intermolecular forces in the liquid state. (c) Calculate the molar mass.
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.
Consider a series of compounds: Methane (CH3), Ethane (CH3 CH3), Propane (CH3 CH2 CH3), Butane (CH3 CH2 CH2 CH3), and Pentane (CH3 CH2 CH2 CH2 CH3). For each compound (a) Indicate whether its molecules are polar or non polar. (b) Indicate predominant type of intermolecular forces in the liquid state. (c) Calculate the molar mass. (d) Convert each boiling point from Celsius degrees to Kelvins. (e) Plot a graph of boiling point (in K) versus molar mass. (f) Show the relationship between molar mass and boiling point?
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