Reaction Energy

In an exothermic reaction the system is releasing energy.

• True

• False

Tags

NGSS.HS-PS1-4

E_{a is a symbol of?}

• Heat energy

• activation energy

• kinetic energy

• light energy

The minimum amount of energy that is required to activate atoms or molecules is

• kinetic energy

• light energy

• activation energy

• none of these

What instrument would you use to detect an endothermic or exothermic reaction?

• Ruler

• Thermometer

• Kalimeter

• balance

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

What kind of reaction is shown in the image?

• endothermic

• exothermic

• combustion

Tags

NGSS.HS-PS1-4

True or false: ΔH for an endothermic reaction is a positive value.

• True

• False

Tags

NGSS.HS-PS1-4

Which of the following is true in an endothermic reaction?

• heat is released; bond forming process

• heat is absorbed; bond breaking process

• heat is released; bond breaking process

• heat is absorbed; bond forming process

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

If the reaction is ENDOTHERMIC, then what will happen to the temperature?

• decrease

• increase

• stays the same

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

What type of reaction is this?

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4

What letter represents the energy of the products?

• A

• B

• C

• D

• E

Tags

NGSS.HS-PS1-4