MULTI-STEP HEAT PROBLEMS The data below refers to an unknown substance, X. Melting Boiling Point Heat of Vaporization point 550 J/g Heat of Fusion 14.0°C 86.0°C 1. Draw a heating curve for substance X, going from formulas used to calculate heat. 150 J/g SH (vapor) SH Capacity SH (solid) (liquid) 4.3 J/gºC 5.2 J/gºC 1.1 J/gºC 2°C to 120°C on the axis below. Write in all b. Determine the amount of heat necessary to change 30g of X from solid at 4°C to liquid at 14°C.

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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.