Okay, let's solve this step-by-step: * Jogger generates 8.0x105 J of heat in 0.5 hours = 3,600 seconds * Jogger's mass is 65 kg * Specific heat capacity of the human body is 3500 J/(kg°C) * Use the heat equation: Q = cmΔT * Plug in the values: 8.0x105 J = (65 kg) x (3500 J/(kg°C)) x ΔT * Solve for ΔT: ΔT = 8.0x105 J / (65 kg x 3500 J/(kg°C)) = 1°C Therefore, if the heat were

1. Activity
H E A T

2. {
Heat & Internal
Energy
Presenter: Elaine B. Espejon
#SupahSizzlingHot
#SSH…

3.  To be able to correlate and
distinguish between HEAT,
TEMPERATURE, and INTERNAL
ENERGY of objects.
 To be able to specify the SI unit
used for measuring the HEAT
CAPACITY of an object.
Objectives

4. Abstraction
Can you recall some of
the previous lessons in
our present subject?

5.  MATTER – anything that occupies space and has
mass.
 KINDS/PHASES of MATTER: Solid, Liquid, Gas and
Plasma
Abstraction

6. HEAT – refers to the motion
of transferring energy
between objects from high
temperature to lower
temperature.
Abstraction

11. TEMPERATURE – measures
the height of energy levels;
the average of how fast/slow
molecules are moving.

13. HEAT originating from
INTERNAL ENERGY
Abstraction
HEAT uses the unit joules (J), (similar
to Work, Kinetic and Potential Energy.)
INTERNAL ENERGY is the sum of the
molecular kinetic energy (due to
random motion of the molecules), the
molecular potential energy (due to
forces that act between the atoms of
molecules and between molecules.),
and other kinds of molecular energy.

14. Application

15. Application
A tray of
water
A cup of
water
𝟐𝟐℃
𝟐𝟐℃
EQUAL
TEMPERATURE

16. Application
A tray of
water
A cup of
water
𝟐𝟐℃
𝟐𝟐℃
BUT, has different
amounts of IE

17. Is HEAT an innate
characteristic of
any kind of
object?
Analysis

18. THANK YOU FOR
LISTENING AND
ACTIVELY
PARTICIPATING!! (^W^)/

19. {
Heat and Measurement
of Heat Capacity
Presenter: Elaine B. Espejon
#SupahSizzlingHot
#SSH…

20. “HEAT is a transfer of energy.”
When energy is supplied or
removed there is a change in
temperature, phase, (or the
performance of work.)
Abstraction

21. A change in TEMPERATURE is
associated with the change in
the average kinetic energy of
the particles within an object.
A change in PHASE is
associated with the changes in
the average internal potential
energy possessed by the object.
Abstraction

22.  (And when work is done, there
is an overall transfer of energy to
the object upon which the work
is done. )
Abstraction

23.  HEAT is measured through the formula:
Q = cm ∆𝑻
o Where Q, represents heat with the unit
“joules (J)”;
o c, is the specific heat capacity of an
object with the unit “J/(kg∙ ℃)”;
o m reprents mass with the unit kg; and
lastly
o ∆𝑻 is the temperature with the unit “℃”
Abstraction

24. Heat capacity is the amount of
heat required to change the
temperature of an object by
1℃
It is also one of the
determiners why there is a
change in phases between
matter.
Abstraction

25. Application
SUBSTANCE
SPECIFIC HEAT
CAPACITY
(SOLIDS)
Aluminum 9.00𝑥102
Copper 387
Glass 840
Human Body (37℃,
average)
3500
Ice (−15℃) 2.00𝑥103
Iron or Steel 452
Lead 128
Silver 235
The values are for 25℃
and 1 atm of pressure

26. Application
SUBSTANCE
SPECIFIC HEAT
CAPACITY
(LIQUIDS)
Benzene 1740
Ethyl Alcohol 2450
Glycerin 2410
Mercury 139
Water (15℃) 4186
The values are for 25℃
and 1 atm of pressure

27. Application
Problem #1: A Hot Jogger
In a half hour, a 65-kg
jogger can generate 𝟖. 𝟎𝒙𝟏𝟎 𝟓 J
of heat. This heat is removed
from the jogger by a variety of
means, including the body’s
own temperature-regulating
mechanisms. If the heat were
not removed, how much would
the jogger’s body temperature
increase?