intro to thermochemistry

Which of these processes is always exothermic?

• A. evaporation

• B. burning

• C. insulation

• D. melting

An endothermic reaction takes place in a beaker. If you touched the beaker, it would feel _______. 

• Warm
• Cold

Tags

NGSS.HS-PS1-4

What type of reaction occurs in a hand warmer?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

When ammonium chloride dissolves in water the temperature falls. The type of energy change is described as ____

• exothermic    

•  activated  

• decomposition

• endothermic

Tags

NGSS.HS-PS1-4

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

• endothermic reaction

• exothermic reaction

Tags

NGSS.HS-PS1-4

Which type of process?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Which type of process?

• exothermic

• endothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

During a chemical reaction, energy is...

(select ALL correct answers)

• created

• destroyed

• transferred

• conserved

• teleported

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

_____ reactions usually feel hot!

• endothermic

• exothermic

Tags

NGSS.HS-PS1-4