Ch2(6-9)Sep5Fa08a

Ch2(6-9)Sep5Fa08a - CHEM 109 General Chemistry University...

Info iconThis preview shows pages 1–5. Sign up to view the full content.

View Full Document Right Arrow Icon
CHEM 109 General Chemistry University of Nebraska FALL 2008
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
Atomic Structure Three subatomic particles Protons Positively charged (+1) Found in the ________ Electrons Negatively charged (–1) “The ______________________” Arranged in “________” around the nucleus Accounts for most of an atom’s ________ Neutrons Neutral (no charge) Found in the _________ Neutrons plus protons make up nucleus and account for most of an atoms ________
Background image of page 2
Atomic Structure Atoms have extremely small masses One 12 C atom has a mass of 1.99 × 10 –23 g Use _______________ to describe atomic mass 1 amu 1/12 the mass of 12 C 1 amu = 1.66054 × 10 –24 g (= 1.99 x 10 -23 /12) Mass of 12 C = ________ Mass of proton = 1.0073 amu Mass of neutron = 1.0087 amu Mass of electron = 5.486 × 10 –4 amu Atoms have extremely small dimensions Typical diameters between 1 × 10 –10 m and 5 × 10 –10 m Use the angstrom (Å) to describe atomic distances 1 Å = 10 –10 m
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
Atomic Structure _______________ ( Z ): the number of protons in the nucleus. The atomic number determines the identity of an element.
Background image of page 4
Image of page 5
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

Page1 / 24

Ch2(6-9)Sep5Fa08a - CHEM 109 General Chemistry University...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online