Calorimetry Quiz

If ΔT is positive then heat is being ___________by the reaction, and if  ΔT is negative then heat is being _____________by the reaction.

• absorbed, released

• released, absorbed

• heat is staying the same

• There is no way to know what is going on with the heat.

A -ΔT means an ______________reaction, and a +ΔT means an _____________ reaction.

• endothermic, exothermic

• exothermic, endothermic

• There is no way to know what type of reaction it is.

• There is no change in heat so it is neither exothermic nor endothermic.

A -Q means an _____reaction/process, and a +Q means an ______ reaction/process.

• exothermic, endothermic

• endothermic, exothermic

• There is no way to know this answer.

When you burn something, like the cheese puff from the lab, heat is ____________.

• released

• absorbed

• stays the same

• there is no way to know.

Calorimetry is the measurement of the ___________

(Choose the best answer below.)

• transfer of heat into or out of a system (reaction/process)

• change in temperature

• amount of energy required to raise the temperature of 1 gram of the substance by 1°C.

• change in the mass of a substance throughout a reaction.

Tags

NGSS.HS-PS3-4

Shown are the units for....

• specific heat capacity

• mass

• temperature

• energy

Having a low specific heat means that the substance is able to lose and gain heat energy slowly.

• True

• False

• exothermic reaction, absorbing the energy

• endothermic reaction, releasing the energy

The specific heat of water is a known value that we can look up when we need to.

• True

• False

In our soda can calorimetry lab (see picture), most of the energy from the burning cheese ball went into the water above it in the soda can, which is why most lab groups got a low percent error.

• True

• False