Thermochemistry

Select the spot where the molecules would be the furthest apart and have the highest energy

Select the spot where the molecules would be the closest together and have the lowest energy

Select the spot boiling point for ammonia

Select the spot melting point for ammonia

Select the area(s) where you would use q = mcΔT

Select the area(s) where you would use dimensional analysis

Reorder the following: What is the order for testing a calorimetry experiment?

• Stir the mixture

• Pour a measured amount of water into a beaker

• Take the initial temperature of the water

• Add the metal/compound to the water

• Take the final temperature of the mixture

Match the following

• Energy required to change 1 gram of a substance by 1 degree celcius

• Endothermic

• Energy that is stored in chemical bonds/composition

• Specific Heat

• Energy moving from higher temperature to lower

• Chemical Energy

• Chemical reaction where energy is absorbed

• Heat

• Chemical reaction where energy is released

• Exothermic

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-1

NGSS.HS-PS3-4

During a chemical reaction in a closed system, all energy is conserved:

• True

• False

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

Label the following graph

c

f

b

a

Exothermic

ΔH = +80

Reactants

ΔH = -80

Endothermic

Products