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?

• Add the metal/compound to the water

• Stir the mixture

• Take the final temperature of the mixture

• Take the initial temperature of the water

• Pour a measured amount of water into a beaker

Match the following

• Energy moving from higher temperature to lower

• Exothermic

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

• Chemical Energy

• Energy that is stored in chemical bonds/composition

• Specific Heat

• Chemical reaction where energy is released

• Endothermic

• Chemical reaction where energy is absorbed

• Heat

Tags

NGSS.HS-PS1-4

NGSS.HS-PS3-4

NGSS.HS-PS3-1

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

Endothermic

ΔH = +80

Products

Reactants

ΔH = -80