Choose a seat for this semester

Hint: If you have trouble seeing, try the front.

Warning: You may keep this seat as long as you show me

you can “handle it.”

Welcome Back!

Happy New Year!

Rules• Be respectful– To your teacher, to each other, to our

classroom, to everyone’s stuff• Be prepared

– Class materials, homework, ATTITUDE• Be on time

– Start work when the bell rings (or before!), hand in work on time

• Be on task– Do what you’re supposed to do when

you’re supposed to do it.

Why?

• To live and learn together• To make everyone feel loved• To learn chemistry and English

for success in IB classes!!

Materials• Zumdahl and Zumdahl book (mostly

for homework)• Class notebook, homework notebook• Periodic table• Calculator• Pens, pencils, eraser• GOOD ATTITUDE!

Anti-materials• Cell phones, iPods, PSPs,

and all other evil electronics – ONE warning, then gone ‘til Friday (or longer).

• Translators – ok– NOT allowed on quizzes

and tests– No games, no cell phone

dictionaries

• No food in class• Drinks are OK• Trash goes in the trash can

Catalyst• Copy the date, objective, agenda,

Catalyst question AND write down the answer

• As SOON AS THE BELL RINGS!• EVERY DAY!• This gives me time to take

attendance of YOU, check YOUR homework, hand back YOUR papers, and organize YOUR lesson

Homework

• Due the next class unless otherwise noted.

• Please put the date it is DUE, and the assignment (page, problem numbers) at the top of the page.

• Ex: Due February 29; p.123 #1-18

• This makes my life easier.

Clean Slate• Today is the first day of the rest

of your life.• Work hard starting TODAY!!

Extra help

• Mon.-Thurs. at 14:00 and 17:05• In the evening or any other time

by appointment – just ask!!• Extra help = success!

Gases

Characteristics of a Gas

• takes volume and shape of container

• compressible and expandable (distance between particles can change)

Gas Laws

• Ideal Gas Law: PV=nRT– Pressure– Volume– number of moles– R=universal gas constant– Temperature

Boyle’s Law

• P V• P V • T constant

Charles’s Law

• T V• T V• P constant

Gay-Lussac’s Law

• T P• T P• V constant

Avogadro’s Law

• For a gas at a constant temperature and pressure, the volume is directly proportional to the number of moles of a gas (doesn’t matter what kind of gas).