SAMPLE OF MATTER Series 7. GASES ет2 Chlorine B02 bromine (vapor over liquid) nitrogen dioxide N₂ Nitrogen NH3 Ammonia H₂ Hydrogen Helium try 60 lab PURE SUBSTANCE Element Compound Metal Nonmetal Ionic V Covalent v ✓ ✓ v MIXTURE Homo- Hetero- DESCRIPTION (color; physical state; transparent/translucent/opaque; shiny/dull malleable/ductile, shape and size of particles for solids; odor for organic series only) BASIC UNIT (for Pure substances only) atom, molecule, or formula unit color less gas. dan orang liquid, opaque yellowish gas "transparent Colorless fas colorless gas colorless pass да colorless gas Page 63
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.
Mark one type only. And basic unit if there is
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