Determine if the following statements are true or false. _____ 1. Water decomposes when an electric current passes through it. _____ 2. A combustion reaction usually gives off heat and light. _____ 3. The burning of glucose in cells is called cellular combustion.
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.
Determine if the following statements are true or false.
_____ 1. Water decomposes when an
_____ 2. A combustion reaction usually gives off heat and light.
_____ 3. The burning of glucose in cells is called cellular combustion.
_____ 4. Sodium chloride forms in a decomposition reaction.
_____ 5. Methane and oxygen combine in a synthesis reaction.
_____ 6. One product of the reaction in question 5 is carbon dioxide.
_____ 7. There are two types of decomposition reactions.
_____ 8. Carbon dioxide forms only in combustion reactions.
_____ 9. The general equation AB + CD → AD + CB represents a replacement reaction.
_____ 10. The
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