7. What kind of substances form ionic bonds? Nonmetals and metal 8. What is a covalent bond? How is this different from an ionic bond? A covalent bond is a pair of electrons sharing between atoms. An ionic bond 9. What kind of substances/elements form covalent bonds? 10.Why do ions form from atoms? 11. Why do ionic compounds form from ions? Atoms, Molecules, and Ions (8:18) https://www.youtube.com/watch?v=lPuY0OHa6RA&list=PLBwHfJmqJz5h5a6UxWpMrxV- İSIMKNSIN&index=12 Video starts at 1:15 min. 1. What is a molecular compound? 2. What is an ionic compound? 3. How do you distinguish between a molecular and an ionic compound?
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.
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