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WorksheetsIntro to Thermo Quiz
Total questions: 14
Worksheet time: 14mins
What term goes on the y-axis? (A)
Heat(Energy)
Temperature
Phase
Type of Matter
What phase of matter exists in part C of the graph?
Gas
Liquid
Solid
Plasma
What phase of matter exists in part D of the graph?
Gas
Liquid
Solid
Plasma
What phase change occurs when you start at D and end at E?
Freezing
Melting
Condensing
Vaporization
What phase change occurs when you start at D and end at C?
Freezing
Melting
Condensing
Vaporization
On which parts of the graph does the temperature remain the same?
Between C and D
Between D and E
At C, D, or E
On both flat sections
On which parts of the graph does the temperature change?
Between C and D
Between D and E
At C, D, or E
On both flat sections
The temperature changes the most during a phase change.
True
False
A student has two liquids at the same temperature of 25°C. After the student mixes them, the temperature rises to 35°C. What type of reaction occurred?
Exothermic
Endothermic
There is no way to tell
A student has two liquids at the same temperature of 25°C. After the student mixes them, the temperature lowers to 18°C. What type of reaction occurred?
Exothermic
Endothermic
There is no way to tell
In an ______ reaction, energy is lost and we feel the surroundings getting warmer.
Exothermic
Endothermic
In an ______ reaction, energy is gained and we feel the surroundings getting colder.
Exothermic
Endothermic
Bonds that are formed ____ energy, and bonds that are broken _____ energy.
Absorb, absorb
Absorb, release
release, release
release, absorb
Use the bond energies below to calculate the reaction energy for 2H2O2 → 2H2O +O2
H-O 464 kJ
O-O 204 kJ
O=O 494 kJ
-2264 kJ
2264 kJ
-86 kJ
86 kJ
