This chapter introduces thermochemistry, focusing on the absorption and release of heat during chemical and physical changes, and exploring the fundamental concepts of energy, work, and their conservation.
Mind Map
Click to expand
Click to explore the full interactive mind map • Zoom, pan, and navigate
hi everyone uh we're going to start our
next chapter and it's going to be about thermochemistry
thermochemistry
so our learning outcomes for this chapter
chapter
are listed right here so we want to make
sure that we can define and distinguish
between different types of energy
and describe the nature of energy
changes we want to think about the
differences between heat
thermal energy and temperature we also
want to define
and distinguish between specific heat
and heat capacity
and describe the the kind of
calculations and implications
of those we also want to spend a lot of time
time
with lots of practice on how to perform
those kinds of heat capacity type calculations
calculations
and we also are going to work towards uh
looking at
calorimetry and how we can do the
calculations to understand how
our reactions uh work
so thermochemistry is all about how heat
is absorbed or released during chemical
and physical changes
so thinking about our moles of a
going to moles of b we've already
looked at this kind of transformation
and looking at stoichiometry
and using our balanced chemical
equations but what we're going to do now
is we're going to do a little side track
over here
we can also understand how heat moves in
between our reactions
and all of our thermochemistry
so here's some definitions that we are
going to use for today
energy is the capacity to supply heat or
to do work work is a very important
concept for thermochemistry
because we are going to cause some sort
of matter
to move against some sort of force so we
will see this quite a bit you may see a
gas that's expanding against the piston
but in most cases we're looking at the
kind of work
that our chemical reactions can do
particularly with things like redox reactions
reactions
kinetic energy is uh sometimes
illustrated with a ke on here and this
is all the energy of motion
so when things are moving around what
kind of energy
potential energy is where we start to
think about
so just by how a system sits
at a specific time may have some sort of energy
energy
so we're thinking about things like
storage of energy
so something that comes to mind are
things like batteries
and also if you have some sort of object
at a higher level
so before an object actually drops it
has potential energy
so the last concept that is really
important and really the crux of what
we're doing in terms of this section's
work it's a lull of conservation of energy
energy
and this is where energy can only be transferred
so that is what we're really going to
look at in terms of the work we're doing
in this section
is how our different energies are going
to transform based on our chemical reactions
Click on any text or timestamp to jump to that moment in the video
Share:
Most transcripts ready in under 5 seconds
One-Click Copy125+ LanguagesSearch ContentJump to Timestamps
Paste YouTube URL
Enter any YouTube video link to get the full transcript
Transcript Extraction Form
Most transcripts ready in under 5 seconds
Get Our Chrome Extension
Get transcripts instantly without leaving YouTube. Install our Chrome extension for one-click access to any video's transcript directly on the watch page.
