Thermochemistry

In an exothermic process the surrounding looses heat. 

• True
• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

In an endothermic reaction the system is releasing energy.

• True
• False

Tags

NGSS.HS-PS1-4

Is the combustion of gasoline endothermic or exothermic?

• Endothermic
• Exothermic

Tags

NGSS.HS-PS1-4

As someone is running on the track they begin to perspire.  If the runner is our system, are they endothermic or exothermic?

• Endothermic process
• Exothermic process

A reaction is performed in a beaker with a temperature probe recording the temperature changes of the reaction.  If the temperature began at 15.0 degrees Celsius and ended at 27.5 degrees Celsius.  If the reaction is our system, is the system endothermic or exothermic?

• Exothermic
• Endothermic

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

Which of the following is an endothermic process?

• solid to gas
• liquid to solid
• solid to liquid
• gas to liquid

Thermochemistry is

• the study of heat changes when physical reactions occur.

• the study of heat changes when chemical reactions occur.

• the study of energy changes when chemical reactions occur.

Diagram shows reaction between sodium and water. The reaction is

A device that is suitable to determine exothermic or endothermic reaction is ____________

Exothermic reaction is where heat is __________ to the surrounding

• taken in

• absord

• released