ERHS Chem - Chapter 10 States of Matter and Thermo

Front

What is the heat required to change 100.0 grams of ice at its freezing point to a liquid and then warm it to room temperature (20.0˚C)?

Back

41.7 kJ

Front

What state of matter is characterized by having a definite shape and volume?

Back

Solid

Front

What state of matter is characterized by having a definite volume but no definite shape?

Back

Liquid

Front

What state of matter has no definite shape or volume?

Back

Gas

Front

What type of reaction absorbs energy from the surroundings?

Back

Endothermic reaction

Front

What type of reaction releases energy to the surroundings?

Back

Exothermic reaction

Front

What is the term for the amount of energy needed to change a substance from solid to liquid at its melting point?

Back

Heat of fusion

Front

What is the term for the amount of energy needed to change a substance from liquid to gas at its boiling point?

Back

Heat of vaporization

Front

What is the process called when a solid changes directly to a gas without becoming a liquid?

Back

Sublimation

Front

What is the process called when a gas changes directly to a solid without becoming a liquid?

Back

Deposition