Chemistry 111 Sections 5-9 Bill Vining 232 Physical Sciences Building

What is Chemistry? What do chemists do?

What is Chemistry? The study of how atoms combine into molecules (and larger structures). What do chemists do? Chemists make and study molecules.

First class assignment How many golf balls will fit in this room? You have 8 minutes.

Diameter of a golf ball = 1.68 in

A Tour of some Molecules

What time is it?

ELEMENTS IN THE NEWS

Today’s Element: Uranium U

Business I Class meetings: –Lecture MWF here –Lab once a week in Physical Sciences Bldg. –Recitation once a week in Physical Sci. Bldg. NO LABS or RECITATIONS this week- they start Monday Class Rules- Syllabus (go over on Friday)

Business II Be here every single day Be here on time Don’t sit in back Don’t talk when I’m talking Don’t let me talk when you’re talking It’s ok to get up and wander Classroom Rules

Business III Homework: –OWL Electronic Homework System –First assignments due in one week Gateway Quizzes –First 20 elements –Tables of common ions

How to do well Sit in front Read text chapter before and after covering Do homework early and often Avail yourself of help: –me –chemistry tutors (times given next week) Keep up with material

To Begin Why is chemistry hard?

To Begin Why is chemistry hard? Atoms are really small. About 100 types of atoms (each a chemical element). Matter is made of atoms, mostly connected together in molecules and larger structures- infinite variety of combinations.

To Begin Why is chemistry useful?

To Begin Why is chemistry useful? Atoms are really small. About 100 types of atoms (each a chemical element). Matter is made of atoms, mostly connected together in molecules and larger structures- infinite variety of combinations.

Chapter 1 Review- read it and know it. Homework on it starting today.

The Periodic Table is Your Friend

Chapter 1: Matter and Measurement Atoms and Elements Molecules and Compounds Classification of Matter Properties of Matter and Measurement –Temperature –Mass –Volume Unit Analysis Calculations (recitation)

Atoms-Elements Molecules-Compounds These are the chemical elements. The smallest particles of which are ATOMS. Combinations of elements make COMPOUNDS. The smallest particles of which are MOLECULES.

Classification of Matter

Some to try: Air _______________ Water _______________ Tea _______________ Cookie _______________ Aluminum foil _____________ Milk _____________ Pen ink _____________ Soda _____________ Find all the pure elements in the room.