Week 1 Lectures - Chem 139

Week 1 Lectures - Chem 139 - What is Chemistry? Oh, right !...

Info iconThis preview shows pages 1–19. Sign up to view the full content.

View Full Document Right Arrow Icon
What is Chemistry? Oh, right … !
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
What is Chemistry? The study of matter/energy and its transformations
Background image of page 2
3 What is Matter? Anything that has mass and occupies space
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
4 Chemistry involves the study of matter on the molecular/atomic scale Powers of 10 Animation http://micro.magnet.fsu.edu/primer/java/scienceopticsu/powersof10/ Just how small are we talking?
Background image of page 4
5 Chemists talk and think about matter in three different ways: 1. Macroscopic 2. Particulate 3. Symbolic
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Thinking About Matter 1. Macroscopic B ig enough to see color, texture, phase, shape, etc. (> 1 micrometer)
Background image of page 6
Thinking About Matter 2. Particulate Too small to see, but represented by pictures of chemical structure = sulfur = water
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Thinking About Matter 3. Symbolic Letters and numbers that represent chemical structures, chemical colors, chemical reactions … H 2 O Fe 2 O 3 2 H 2 O http://strongbrains.com/images/DaltonElementalSymbols.jpg
Background image of page 8
Types of matter Atoms -Tiny building blocks of all matter Molecules Two or more atoms connected by strong chemical bonds
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
10 Classification of Matter There are 2 types of matter: Element : composed entirely of atoms (all identical particles) cannot be decomposed into other pure, stable substances Compound: composed entirely of molecules (all identical particles) made of two or more different types of atoms can be decomposed into constituent elements or other compounds And they can be mixed together, too! Mixtures are composed of different kinds of atoms or molecules. Mixtures can be separated into constituent elements and/or compounds
Background image of page 10
Water Molecule Oxygen Atom Hydrogen Atom Hydrogen Atom A Compound Made of Two Elements
Background image of page 11

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon