U7 Thermochemistry Review

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

• Endothermic
• Exothermic
• Neutral

Tags

NGSS.HS-PS1-4

H₂ + ½ O₂ --> H₂O + 285kJ is an example of a(n)

• Electrical equation
• Heat equation
• Thermochemical equation

Tags

NGSS.HS-PS1-4

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

• Reactant
• Product

Tags

NGSS.HS-PS1-4

Energy transfered between samples of matter because of a difference in their temperature.

• Temperature
• Enthalpy
• Entropy
• Heat

Tags

NGSS.HS-PS3-4

How much heat does an aluminum block absorb if 10.00 grams ae heated from 25.0^oC to 50.0^oC? the specific heat of aluminum is .900J/g^oC

• 450
• -450
• 225
• -225

Tags

NGSS.HS-PS3-4

The diagram represents which type of reaction

• endothermic
• exothermic

Tags

NGSS.HS-PS1-4

When you dropped a hot metal sample into room temperature water in the lab what happened?

• the heat from the metal traveled into the water
• the cool from the water traveled into the hot metal
• both of the other answers are correct

Tags

NGSS.HS-PS3-4

A measure of the average kinetic energy of a substance.

• heat
• temperature
• enthalpy
• entropy

Tags

NGSS.HS-PS3-2

The potential energy diagram of a reaction is shown. Which statement below is correct relating to this reaction?

• #1 represents the enthalpy change for this exothermic reaction.

• #2 represents the enthalpy change for this endothermic reaction.

• #3 represents the enthalpy change for this endothermic reaction.

• #4 represents the enthalpy change for this exothermic reaction.

Tags

NGSS.HS-PS1-4

In an exothermic process the surrounding looses heat. 

• True
• False

Tags

NGSS.HS-PS1-4