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WorksheetsHeating Curve Practice
Total questions: 20
Worksheet time: 2hrs 41mins
The melting point of the sample is
-60 ºC
-100 ºC
60 ºC
100 ºC
What is holding molecules in a solid close to each other?
Intermolecular forces
Chemical Bonds
Heat
Cold
What is true about intermolecular forces in gases
they have been broken by heat
They are very strong
They cannot be put back together
they represent a chemical change
What is the relationship between heat added and temperature change in a heating curve?
Heat added is inversely proportional to temperature change.
Heat added is directly proportional to temperature change in regions of temperature increase; during phase changes, heat is added without a temperature change.
There is no relationship between heat added and temperature change.
Heat added only affects the temperature during phase changes.
The heating curve below represents a sample of a substance starting as a solid below its melting point and being heated over a period of time. Which statement describes the energy of the particles in this sample during interval DE?
Both potential energy and average kinetic energy increase.
Both potential energy and average kinetic energy decrease.
Potential energy increases and average kinetic energy remains the same.
Potential energy remains the same and average kinetic energy increases.
Calculate ΔT when a substance goes from 10°C to 75°C
-65°C
75°C
10°C
65°C
