5.1 Enthalpy changes

Which of the following is FALSE about temperature?

• Average translational energy per particle
• Average kinetic energy per particle
• Unit is Kelvin
• Energy transfer from hot to cold

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Which of the following is FALSE about heat?

• Total kinetic and potential energy contained in a substance
• Measured in Joules
• Form of transfer energy from hot to cold
• Average total kinetic energy for a molecule

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

Specific heat capacity is

• heat energy needed to raise temp by 1C
• heat energy needed to raise temp of 1g of substance by 1C
• heat energy absorb to raise 1g of substance to higher temp
• heat energy need to raise temp for 1g of substance

Tags

NGSS.HS-PS3-1

Calorimetry is a technique used to

• measure temperature change
• measure heat released
• measure heat absorbed
• measure the enthalpy change for a reaction

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

Same amount of heat is given to 3 substance. Which shows a smallest increase in temperature?

• gold
• silver 
• water

Tags

NGSS.HS-PS3-4

Which statement is FALSE for an exothermic reaction?

• Reactants higher in energy and less stable
• Product lower in energy and more stable
• Products have stronger bonds than reactants
• Reactants have stronger bonds than products

Tags

NGSS.HS-PS1-4

Which statement is FALSE for an endothermic reaction?

• Products higher in energy and less stable
• Reactants lower in energy and more stable
• Products have stronger bonds than reactants
• Reactants have stronger bonds than products

Tags

NGSS.HS-PS1-4

Bond making and bond breaking. Which of following is TRUE?

• During bond breaking, heat is absorbed
• During bond making, heat is absorbed
• During bond breaking, heat is released
• None of the above

Tags

NGSS.HS-PS1-4

Conditions for standard enthalpy change are

• Temp-298K, Press - 100kPa, Conc-1M
• Temp-273K, Press - 100Pa, Conc-1M
• Temp-298K, Press - 100Pa, Conc-1M
• Temp-273K, Press - 100kPa, Conc-1M

Diagram below shows

• Standard enthalpy of combustion
• Standard enthalpy of solution
• Standard enthalpy of formation
• Standard enthalpy of reaction

Tags

NGSS.HS-PS1-4