Some Materials Give Off Heat When Mixed

question 7

Multiple Choice

Some materials give off heat when mixed.What is this called?

• A) Chemical reaction
• B) Exothermic reaction
• C) Thermal conductivity
• D) Coefficient of thermal expansion

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Definitions:

Québec

A province in eastern Canada, known for its predominantly French-speaking population and unique cultural heritage.

Air Mass

A volume of air defined by its temperature and water vapor content that moves across large areas of the Earth's surface.

Surface

The outermost layer or boundary of an object or material which is in direct contact with the surrounding environment.

Hot And Dry

Describes climates or conditions with high temperatures and low precipitation, typical of deserts or arid regions.