6.3 Quizziz

What causes gas molecules to move rapidly?

• Absence of energy

• High kinetic energy

• Low kinetic energy

• High potential energy

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-1

How do ideal gas particles move?

• In circular paths

• In constant straight lines

• In zigzag paths

• In random curves

Tags

NGSS.HS-PS3-2

Which of the following is NOT a variable in the combined Gas Law?

• Pressure (P)

• Volume (V)

• Density (D)

• Temperature (T)

Which sample of gas has the same number of particles as 33L of Ne at STP

• 11 L of He

• 22 L of Ar

• 33 L of Kr

• 44 L of Xe

What is the unit of heat energy?

• Joules (J)

• Grams (g)

• Degrees Celsius (°C)

• Kelvin (K)

define enthalpy

• Enthalpy is only related to the temperature of a system
• Enthalpy is the overall change in energy during a reaction

• Enthalpy is the same as entropy
• Enthalpy is the measure of disorder in a system

Tags

NGSS.HS-PS3-1

what formula is used to calculate the heat required (no phase change)

• Q = mcΔx
• Q = mcΔT
• Q = mcΔV
• Q = mcΔP

what is the specific heat of water

• 5.432 Joules/gram degree Celsius
• 3.567 Joules/gram degree Celsius
• 4.18 Joules/gram degree Celsius

• 2.718 Joules/gram degree Celsius

When do you use Q=mH

• When a phase change occurs

• only when heat is gained

• only when heat is lost

• when heat is gained or lost (no phase change)

Tags

NGSS.MS-PS1-4

NGSS.MS-PS3-4

what type of reaction has a negative change in enthalpy

• Endothermic

• Exothermic

Tags

NGSS.HS-PS1-4