Energy, Heat and Phase Change

What factors are required for successful collisions?

• collision of particles
• sufficient energy
• favorable orientation
• all of these

The rate of a reaction increases as temperature__________________.

• Decreases
• Increases
• Stays the Same

Tags

NGSS.HS-PS1-5

The line that represents the heat of reaction (ΔH) of this reaction is

• A

• B

• C

• D

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

The reaction whose energy diagram is shown here is

• Exothermic

• Endothermic

• Isothermic

Tags

NGSS.HS-PS1-4

The heat of reaction (ΔH) of this reaction is

• 240 kJ

• 160 kJ

• -80 kJ

• -160 kJ

• 80 kJ

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

The heat content of the products is

• 80 kJ

• 160 kJ

• 240 kJ

• 100 kJ

The line that represents the activation energy (E_a) of this reaction is

• E

• D

• C

• B

• A

Tags

NGSS.HS-PS1-4

What line segment represents only the solid state?

• A-B
• B-C
• C-D
• D-E

Tags

CCSS.HSF.IF.B.4

Between which two points is Heat of Fusion?

• A <----> B

• B <----> C

• C <----> D

• D <----> E

• E <----> F

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

In which segment is the kinetic energy remaining constant?

• A-B
• B-C
• C-D
• E-F

Tags

NGSS.MS-PS3-1