Thermochemistry Review

What type of reaction is shown in the reaction pathway?

• endothermic reaction

• exothermic reaction

Tags

NGSS.HS-PS1-4

Find the enthalpy of formation for the following chemical equation. CH₄ (g) + 2 O₂ (g) --> CO₂ (g) + 2 H₂O (g)

• -802.3 kJ

• 802.3 kJ

• 951.9 kJ

• -951.9 kJ

Tags

NGSS.MS-PS1-2

NGSS.MS-PS1-4

NGSS.MS-PS1-5

Find the enthalpy of formation for the following chemical reaction.

• -847.6 kJ

• 847.6 kJ

• 2492 kJ

• -2492 kJ

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

NGSS.MS-PS3-5

Find the change in enthalpy over the following two-step equations.

• -292 kJ

• -68 kJ

• 292 kJ

• 68 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

During an endothermic reaction in a beaker if we are part of the surroundings and touched the beaker, it would feel _______. 

• Warm

• Cold

Tags

NGSS.MS-PS1-4

When a candle is lit hydrocarbons are combusting. An exothermic reaction is occuring. Energy is being _________________ .

• absorbed

• frozen

• destroyed

• released

Tags

NGSS.MS-PS3-5

The melting point of the sample is

• -60 ºC

• 20 ºC

• 60 ºC

• 100 ºC

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

Which letter indicates where water is in both the solid and liquid phase at the same time?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

In which region(s) does temperature increase?

• Region C only

• Regions B and D

• Regions A, C, and E

• Regions A and B

Tags

NGSS.MS-PS1-4

In which region(s) of the heating curve would water be a liquid and a gas at the same time?

• A

• B

• C

• D

• E

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4