Endothermic vs Exothermic Reactions

If the enthalpy ter (ΔH) is negative the reaction is ____.

• Endothermic

• Exothermic

• Neutral

Tags

NGSS.HS-PS1-4

If ΔH is positive, heat would be shown on the _____ side of the thermochemical equation.

• Reactant

• Product

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

• triple beam balance

• ruler

• thermometer

• graduated cylinder

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

What kind of reaction is represented by the graph shown?

• Endothermic

• Exothermic

• Cannot be determined

Tags

NGSS.HS-PS1-4

What kind of reaction is represented by the graph shown?

• Endothermic

• Exothermic

• Cannot be determined

Tags

NGSS.HS-PS1-4

A student combined two substances to allow them to react. The temperature of the surroundings before the reaction was 25 ° C. The temperature of the surroundings after the reaction was 18° C. Which of the following is true?

• The reaction is exothermic

• The reaction is endothermic

Tags

NGSS.HS-PS1-4

In an exothermic reaction, energy is

• absorbed

• released

Tags

NGSS.HS-PS1-4

In an endothermic reaction, energy is

• absorbed

• released

Tags

NGSS.HS-PS1-4

During an exothermic reaction, the temperature of the surroundings

• decreases

• increases

• stays the same

Tags

NGSS.HS-PS1-5

NGSS.HS-PS3-4

During an endothermic reaction, the temperature of the surroundings

• decreases

• increases

• stays the same

Tags

NGSS.HS-PS3-4