GENERAL CHEMISTRY 2 (STEM Fay M. Lafable GI Name: Clyme lified True or False Cons: Write CHEMISTRY if the statement is correct, if otherwise, change the underlined tement correct. Section: St. Therese Calcutta Se 1. At room temperature, water is colorless, ductile, and tasteless liquid. 2. The 3rd postulate of KMT states that the amount of kinetic energy in a substance ted to its temperature. Increased temperature means greater speed. 3. The 5th postulate of KMT states that The amount of space between particles ted to the substance's state of matter. 4. When cooled, liquid slightly expands. 5. The water molecules in ice have more defined hexagonal arrangement. ENT 6. In a solution, solute dissolves solvent. UTE 7. Solvent is less than solute. VIRATED8. A solution that contains a large proportion of solute relative tothe solvent is c- ed. ARITY 9.The concentration of the solution is best described by mole fraction or molar m MI STRY 10. Larger molarity values means more concentrated solution. 11. Molarity is the concentration of a solution expressed in moles of solute per gram of solvent. 12. Thermochemistry is a branch of thermodynamics which deals with the rconversion of energy between two forms: heat and power. 13. The First Law of Thermodynamics states that energy can be createdor dest 14. When a system absorbs heat it is called exothermic. 15. Heat is the transfer of thermal energy between two bodies that are at di peratures and is not equal to thermal energy.
Thermochemistry
Thermochemistry can be considered as a branch of thermodynamics that deals with the connections between warmth, work, and various types of energy, formed because of different synthetic and actual cycles. Thermochemistry describes the energy changes that occur as a result of reactions or chemical changes in a substance.
Exergonic Reaction
The term exergonic is derived from the Greek word in which ‘ergon’ means work and exergonic means ‘work outside’. Exergonic reactions releases work energy. Exergonic reactions are different from exothermic reactions, the one that releases only heat energy during the course of the reaction. So, exothermic reaction is one type of exergonic reaction. Exergonic reaction releases work energy in different forms like heat, light or sound. For example, a glow stick releases light making that an exergonic reaction and not an exothermic reaction since no heat is released. Even endothermic reactions at very high temperature are exergonic.
MODIFIED TRUE OR FALSE
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