17. The figure below shows how the temperature of a substance changed as it was heated. Which segment of the graph indicates that the substance was undergoing a change of state? * Change in Temperature of a Substance Over Time D B Time а. А b. B С. С d. D 18. Baguio is a famous tourist destination in the Philippines. People enjoy the cold ambiance as the place is covered by ground-level fog. Which of these could have caused the formation of fogs? * a. Molecules of gas changed into liquid b. Molecules of gas changed into a gas C. Molecules of liquid changed into a gas d. Molecules of solid changed into a gas 19. A pot of water is placed on a hot stove. Small bubbles begin to appear at the bottom of the pot. The bubbles rise to the surface of the water and seem to pop or disappear. What are the bubbles made of? * а. air b. carbon and oxygen C. heat d. oxygen and hydrogen Temperature
17. The figure below shows how the temperature of a substance changed as it was heated. Which segment of the graph indicates that the substance was undergoing a change of state? * Change in Temperature of a Substance Over Time D B Time а. А b. B С. С d. D 18. Baguio is a famous tourist destination in the Philippines. People enjoy the cold ambiance as the place is covered by ground-level fog. Which of these could have caused the formation of fogs? * a. Molecules of gas changed into liquid b. Molecules of gas changed into a gas C. Molecules of liquid changed into a gas d. Molecules of solid changed into a gas 19. A pot of water is placed on a hot stove. Small bubbles begin to appear at the bottom of the pot. The bubbles rise to the surface of the water and seem to pop or disappear. What are the bubbles made of? * а. air b. carbon and oxygen C. heat d. oxygen and hydrogen Temperature
Chemistry: The Molecular Science
5th Edition
ISBN:9781285199047
Author:John W. Moore, Conrad L. Stanitski
Publisher:John W. Moore, Conrad L. Stanitski
Chapter4: Energy And Chemical Reactions
Section: Chapter Questions
Problem 122QRT
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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.
Question
Answer number 17 to 19 pls. I don't want to waste my money here.
Transcribed Image Text:17. The figure below shows how the temperature of a substance changed as it was
heated. Which segment of the graph indicates that the substance was undergoing a
change of state? *
Change in Temperature
of a Substance Over Time
В
Time
а. А
b. в
С. С
d. D
18. Baguio is a famous tourist destination in the Philippines. People enjoy the cold
ambiance as the place is covered by ground-level fog. Which of these could have
caused the formation of fogs? *
a. Molecules of gas changed into liquid
b. Molecules of gas changed into a gas
C. Molecules of liquid changed into a gas
d. Molecules of solid changed into a gas
19. A pot of water is placed on a hot stove. Small bubbles begin to appear at the
bottom of the pot. The bubbles rise to the surface of the water and seem to pop or
disappear. What are the bubbles made of? *
а. air
b. carbon and oxygen
С. Һeat
d. oxygen and hydrogen
Temperature
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