{[ promptMessage ]}

Bookmark it

{[ promptMessage ]}

notes2-new - Unit 2 The Atom Classification of Matter

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon
Unit 2 – The Atom Classification of Matter 010009000003e002000003004802000000004802000026060f00860457 4d464301000000000001001c5100000000010000006404000000000000 64040000010000006c00000000000000110000004a0000007400000000 00000000000000023e0000a119000020454d4600000100640400001000 000003000000000000000000000000000000bf12000074180000cb0000 0009010000000000000000000000000000f8180300280b040016000000 0c000000180000000a0000001000000000000000000000000900000010 000000a60e000010060000520000007001000001000000a8ffffff000000 0000000000000000009001000000000086070000028b5b534f00000000 0000000000000000000000000000000000000000000000000000000000 0000000000000000000000000000000000000000000000000000000000 ffff0000002000000000ffffffffffffffff0000002005000000c05114000000 00009000a600e0511400e0c5073008311400e05114000000000040ccaa3 08cac8a04e03014000000000000672000d0301400c4521400f4000010cc 49110023c007309000a6008cac8a0400000000000000008cac8a04d0998 babc0c107300000110040ccaa3084ccaa303b0690018603020106000301 010101010300000000000e08100000000000000001000400000000008b 5b534f0000530069006d00000075006e00000000000000000000000000 0000000000000000000000000000000000000000000000000000ac4711 00f2b40230ac4711006c4eaf30c44711006476000800000000250000000 c00000001000000520000007001000002000000a8ffffff0000000000000 00000000000900100000000000007400012540069006d0065007300200 04e0065007700200052006f006d0061006e00000000000000000000000 0000000000000000000000000000000000000000000000000002400000 00c001058e13000000c00707524005c4711000000c9300000000000000 0000000000000000000b0b3000088272400d4c9ec3002000000104eaa0 0104eaa0034098e0050471100fc2b08305c471100104eaa00504711000e 2c083013000000d04eaa00a8481100104eaa00d0998babb84711001b420 000684611000000150004f9120000e9907c47169001000002020603050 Chip Shea 1 11/5/2011
Background image of page 1

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

View Full Document Right Arrow Icon
405020304877a0020000000800800000000000000ff010000000000005 40069006d00650073002000000065007700200052006f006d0061006e0 0000000000000b0471100803500300000c930d4c9ec3000000000ac471 100f2b40230ac4711006c4eaf30c4471100647600080000000025000000 0c00000002000000120000000c00000001000000250000000c00000002 000000180000000c000000000000025400000054000000000000001100 00004a00000074000000010000008d5c87409876874000000000600000 00010000004c000000040000000000000000000000a60e00000e060000 50000000200000004b00000046000000280000001c0000004744494302 000000ffffffffffffffffa70e0000110600000000000046000000140000000 80000004744494303000000250000000c0000000e0000800e000000140 000000000000010000000140000000400000003010800050000000b020 0000000050000000c02d200fc01040000002e0118001c000000fb02f4ff0 0000000000090010000008607000002cbcecce50000000000000000000 0000000000000000000000000000000000000040000002d0100001c000 000fb02f4ff0000000000009001000000000740001254696d6573204e65 7720526f6d616e0000000000000000000000000000000000040000002d 0101000400000002010100040000002d01010005000000090200000002 0d000000320a0d0000000100040000000000fc01d20020760a001c0000 00fb020200010000000000bc02000000860102022253797374656d0000 000000000000000000000000000000000000000000000000040000002d 010200030000000000 Atomic theory The OLD GUYS: Democritus: (ancient) Substances are made up of tiny, indivisible particles he called “atomos”. Philosopher, not a scientist Lavoisier: (1788) Father of modern Chemistry: Law of Conservation of Mass – matter cannot be created or destroyed, only rearranged Proust: (1794) Law of Definite Proportions – a pure substance always contains the same elements combined in the same ratio by mass. Example: water is always H 2 O John Dalton: (1803) Atomic Theory 1) All matter made up of tiny indivisible particles called atoms 2) All atoms of the same element are identical 3) Atoms of different elements are different 4) Atoms combine in simple whole number ratios to form compounds 5) Atoms cannot be divided
Background image of page 2
Gay Lussac: (1804) Law of Combining Volumes John Dalton: (1810) Law of Multiple Proportions – the same two elements can combine in different ratios to form different compounds. When comparing the masses between compounds, they are still small whole number ratios. Avogadro: (1811) Avogadro’s Hypothesis – led to 6.02 x 10 23 particles = 1 mole Discovery of subatomic particles (The NOT-SO-OLD GUYS) J.J. Thomson: (1897) discovered the electron, calculated the charge-to-mass ratio of e-. Cathode ray tube experiment (e-/m = 1.759 x 10 8 coulomb/g) Plum-pudding model of the atom (blueberry muffin model) Millikan: (1911) Oil-Drop experiment established charge on e- (1.62 x 10 -19 coulomb) 1) sprayed oil into the upper chamber, transferred e- to drops 2) oil drops fall through chamber due to gravity 3) charge on plates adjusted to offset gravity and suspend drop 4) charge on oil drops calculated **charges varied, but were all multiples of one fundamental charge, the charge of an e-** James Chadwick: (1932) discovered the neutron; high energy, neutral particle emitted from the nucleus Nuclear Model of the Atom (The NEW GUYS) Becquerel: (1896) noticed that uranium left on a photographic paper left an image; established that uranium was radioactive
Background image of page 3

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

View Full Document Right Arrow Icon
Image of page 4
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}