Return Ch. 6 tests; Begin Chapter 3 - Chemistry of Life (3.1)

-TUTORIAL WED & THUR this week in C13!

-Last day to turn in late/missing work is this Fri, 12/18!


-Honors projects due the week of January 11th!

-What happened at the Climate Summit? Listen...

-Return Ch. 6 tests & review (missing test grades?)

-Let's look at our syllabus - where are we? 

Up next: Chapter 3 - Chemistry of Life
-Matter & Substances
-Water & Solutions
-Carbon Compounds
-Energy & Metabolism

-Take 'Chemistry of Life' pretest & check answers 
(write answers in notebook, left side)

Warm Up: Of the following substances, which are compounds and which are elements? 

table salt   copper wire   water   sugar   aluminum foil

Learning Objective: I can understand the structure and behavior of matter in order to understand how living things work and interact.

-Use textbook (hard copy or online) to do 
Directed Reading 3.1
-Copy into next open right hand page, do left side processing

-Review answers to Directed Reading 3.1

Notes:
-Every living and nonliving thing is made up of matter, and all matter is made up of atoms - the smallest unit of matter that cannot be broken down by chemical means.

-Atoms are made of:
protons +
electrons -
neutrons (no charge)

-Since each atom has the same number of protons and electrons, they have no overall charge (cancels out charge)
Watch this video 'Atomic Structure' to help explain the structure of atoms.

-The Periodic Table contains elements, a substance made up of atoms that have the same number of protons. An element's identity is based on its atomic number, which is the number of protons in one atom of that element. 


For example, carbon's atomic number is 6.

-The chemical reactions covered in this chapter involve electrons.

-A change in the number of electrons does not change an atom's identity.

-Atomic structure:
Electrons fill the outer shells of an atom
Only 2 electrons can fill the innermost shell
Outer shells hold eight and prefer to have their outer shell filled, making them stable.
-Hydrogen is stable when it only has 2 valence electrons
-A compound is a substance make of the bonded atoms of two or more different elements.

Comparing bonding:
Covalent - electron pairs are shared; molecules are produced; bond is the attraction for shared electrons.
Ionic - electrons are transferred; ions are produced; bond is the attraction between ions of opposite charge.