Thermal Energy & Chemical Equation Review

In an exothermic reaction, heat energy is...

• Released

• Absorbed

In an endothermic reaction, heat energy is...

• Released

• Absorbed

In an exothermic chemical reaction, the temperature would....

• Increase

• Stay the same

• Decrease

In an endothermic chemical reaction, the temperature would...

• Increase

• Stay the same

• Decrease

When an iron nail gets rusty, heat energy is released. What process is this?

• Endothermic

• Exothermic

What type of reaction is portrayed in this energy diagram?

There is LESS energy in the reactants and MORE energy in the products.

• Exothermic

• Neutral

• Endothermic

• Chemical reaction

What type of reaction is portrayed in this energy diagram?

There is MORE energy in the reactants, and LESS energy in the products.

• Exothermic

• Chemical reaction

• Endothermic

• Neutral

When Ba(OH)₂ and NH₄Cl react, the temperature of the mixture decreases. What kind of reaction is this?

• Endothermic

• Exothermic

• Decomposition

• Thermal radiation

ENDO- means heat energy "goes in," "enters," or is _______.

• Absorbed

• Released

EXO- means heat energy "goes out," "exits," or is ________.

• Absorbed

• Released