Chemistry 131 Lecture
MWF: 4:40 to 5:30 pm; Room: HUMB 0170
Dr. David R. Battiste
(As part of your class requirements, check your USA e-mail regularly!)
Thermodynamics: Chapter 5
Changes in Enthalpy
Do these processes have positive or negative enthalpy
1. Melting of ice?
2. Combustion of propane?
3. Vaporization of water to form steam?
4. The reaction in a ThermaCare heat wrap?
Changes in Entha
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. " IIIJM'V
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b) AUT= Fwd :17:th
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in Infancy and Toddlerhood
She grew an inch overnight
Is this a plausible statement?
In fact it is.
Children can grow as much as an inch (2.5 cm) in
less than a 24 hour period
Sequences of Physical Development
Jack in utero!
It's growing inside me.
From Egg to Baby: An Incredible Journey
Think about this:
Two incomplete cells combine to form one
This complete cell then grows into a complete
organism consisting o
Its time to meet the baby!
Leading Up to Childbirth
Mucus plug dislodges
1 in 10 womens water breaks (rupture of amniotic sac)
May have bloody discharge
Indigestion, diarrhea, ache in the small of the back,
2-5ish Year Olds
Brain Development in
Links among parts of
the brain increase:
Balance and body
Chemistry 131 & 132
Standard Heat of Reaction (Hrxn)
H is the heat content in a reaction
H is the change in the amount of heat in a reaction due to the absorption or release of
energy as heat
o + H means heat has been absorbed (endothermic
Chem 131 Lab Section _
Experiment Number and Title: _#7 Thermochemistry: The Heat of Reaction_
Purpose: The purpose if this exercise is to learn how to use different lab equipment. We will determine
the appropriate type and size
Ivey Van Voast
Density Lab Report
Chemistry 51 Experiment 3 Introduction to Density
B. Research Question
What is density and how can you find the density of an object?
What is mass and how can you find the mas
Wave-nature or Light
Light waves consist of perpendicular, oscillating electric and magnetic fields
Some Reminders about waves
The distance between corresponding points on adjacent waves is the _. wavelength, Generally this is measu
Chapter 9 Molecular Geometries and Bonding Theories
The shape of a molecule plays an important role in its reactivity. Lewis structures do not provide the molecular shape By noting the number of bonding and nonbonding electron pa
Chapter 10 Gases
Characteristics of Gases
Tend to have low molecular weights Elements or molecular compounds composed of nonmetals Substances that are liquid or solid under ordinary conditions can also exist as gases called vapors. Unlike liquid
Chapter 7 Periodic Properties of the Elements
Development of Periodic Table
Elements in the same group generally have similar chemical properties. Properties are not identical, however.
Development of Periodic Table
Dmitri Mendeleev and Lothar Me
Chapter 2 Atoms, Molecules, and Ions
Atomic Theory of Matter
The theory that atoms are the fundamental building blocks of matter reemerged in the early 19th century, put forth by John Dalton.
Each element is composed of extremel
Chapter 4 Aqueous Reactions and Solution Stoichiometry
Homogeneous mixtures of two or more substances. The solvent is present in greatest abundance. All other substances are solutes.
Electrolytes are substances that diss
Chapter 8 Concepts of Chemical Bonding
A bond is a strong attraction between two atoms or ions. Three basic types of bonds:
Electrostatic attraction between oppositely charged ions
Sharing of electrons, usually b