October 6, 2010

Bell Ringer: List 6 principles to Dalton's Atomic Theory.
- Matter is composed of extremely small particles called atoms.
- Atoms are indivisible and indestructible
- Atoms of a given element are identical in size, mass, and chemical properties.
- Atoms of a specific element are different from those of another element.
- Different atoms combine in simple whole-number ratios to form compounds.
- In a chemical reation, atoms are separated, combined or rearranged.

Today's Work:

-Turn in Launch Lab
-Element Quiz
- Tin - Sn
- Antiomy - Sb
- Xenon - Xe
- Cesium - Cs
- Barium - Ba
- Tungsten - W
- Platinum - Pt
- Gold - Au
- Mercury - Hg
- Lead - Pb
- Radon - Rn
- Uranium - U
-Vocabulary Quiz 4.1-4.3

- Dalton's Atomic Theory
- States that matter is composed of extremely small particles called atoms; atoms are invisible and indestructable;atoms of a given element are identicle in size, mass and chemical properties; atoms of a specific element are different from those of an other element; different atoms combine in simple whole-number ratios to form compounds; ina chemical reaction, atoms are separated, combined, or rearranged

- Atom
- The smallest particle of an element that retains all the properties of that element; is electrically neutral, spherically shaped, and composed of electrons, protons, and neutrons.

- Cathode Ray
- Radiation that originates from the cathode and travels to the anode of a cathode-ray tube.

- Electron
- A negatively charged, fast-moving particle with an extremely small mass that is forced in all forms of matter and moves through the empty space surrounding an atom's nucleus.

- Neutron
- A neutral. subatomic particle in an atom's nucleus that has a mass nearly equal to that of a proton.

- Nucleus
- The extremely small, positively charged, dense center of an atom that contains possitively charged protons ans neutral neutrons.

- Proton
- A subatomic particle in an atom's nucleus that has a possitive charge of 1+.

- Atomic Mass
- The weighted average mass of the isotopes of that element.

- Atomic Mass Unit (AMU)
- One twelfth the mass of a carbon-12 atom.

- Atomic Number
- The number of protons in an atom.

- Isotope
- Atoms of the same element with different numbers of neutrons.

- Mass Number
- The number after an element's name, representing the sum of its protons and neutrons.

-Collected Pg 106 #7-11

-Notes 4.1 4.2

-Homework:

-Chapter 4.2 and 4.3
- Read pg. 115-121
- Pg 121 #20-24

-Know all 52 Elements

-Ch 4.4 Vocab Quiz on Friday

-Ch 4 test Tuesday