Thermochemistry Review

The specific heat of aluminum is 0.21 J/g°C.  How much heat(Q) is released when a 10 g piece of aluminum foil is taken out of the oven and cools from 100° to 50°?

• -105 J

• 105 J

• 1.05 J
• 0.105 J

Tags

NGSS.HS-PS3-2

NGSS.HS-PS3-4

20 g of water. specific heat of water is 4.18 J/g°C.  temperature changes from 20° C to 25° C, how much heat energy (q) moves from the water to the surroundings?

• • 418 J

• 210 J
• 80 J
• 4.18 J

Tags

NGSS.HS-PS3-4

What does temperature measure?

• Heat
• ºC
• Kinetic Energy
• Thermal Energy

Tags

NGSS.HS-PS3-4

In an endothermic reaction the system is releasing energy.

• True
• False

Tags

NGSS.HS-PS1-4

For an endothermic reaction, the heat is on the ____ side.

• reactant
• product
• either side

Tags

NGSS.HS-PS1-4

For an exothermic reaction, the heat is on the ____ side

• reactant
• product
• either side

What type of reaction is shown in the picture?

• endothermic
• exothermic

Tags

NGSS.HS-PS1-4

In an exothermic process, the surroundings are are gaining energy.

• True
• False

Tags

NGSS.HS-PS1-4

If two objects have different temperatures, heat will flow from the warmer object to the cooler one UNTIL ____________

• one reaches a temperature of zero
• they both have an equal temperature
• one runs out of energy

Tags

NGSS.HS-PS3-4

___________________ is the capacity to do work or supply heat.

• energy

• heat changes

• specific heat

• thermochemistry