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BYU > Chem 105 > Flashcards

Chem 105 Flashcards

1
Q

Giga

A

(G) 10^9

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2
Q

Mega

A

(M) 10^6

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3
Q

Kilo

A

(k) 10^3

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4
Q

Deci

A

(d) 10^-1

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5
Q

Centi

A

(c) 10^-2

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6
Q

Milli

A

(m) 10^-3

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7
Q

Micro

A

(m) 10^-6

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8
Q

Nano

A

(n) 10^-9

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9
Q

Pico

A

(p) 10^-12

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10
Q

Femto

A

10^-15

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11
Q

JJ Thompson

A

Cathode rays.
Deflected light rays with magnetic fields
Must be negatively charged particles

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12
Q

Millikan

A

Oildrop
Sprayed oil, charged it, and adjusted magnetic fields to suspend oil droplets
Figured out charge and weight of electrons

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13
Q

Rutherford

A

Goldfoil
Shot alpha wave through gold foil and observed wide angles of deflection
Nucleus is dense and + charged

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14
Q

Curie

A

Radioactivity
Proved existence of + charged particles

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15
Q

Einstein

A

Photoelectric effect

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16
Q

Aufbau Principle

A

Electrons are placed in lowest energy orbitals first

17
Q

Pauli Exclusion Principle

A

Only 2 electrons can be placed in each orbital

18
Q

Hund’s Rule

A

Electrons will go into different orbitals before they pair up

19
Q

Intermolecular forces

A
  1. London dispersion forces
  2. Dipole induced dipole
  3. Dipole-dipole
  4. H-bonding
  5. Ion- dipole
  6. Ion-ion
20
Q

London dispersion forces

A

Nonpolar molecules
Increase as size increases

21
Q

Dipole-induced

A

Interaction between polar and nonpolar molecules

22
Q

Dipole-dipole

A

Interactions between polar molecules
Opposites attract

23
Q

Hydrogen bonding

A

Strongest dipole-dipole
H bonds with electronegative atoms (N O F)

24
Q

Ion-dipole

A

Interactions between ions and polar molecules

25
Q

Ion-ion

A

Interactions between ions
Strongest intermolecular forces

26
Q

viscosity

A

how easy it is for molecules to slide past each other

27
Q

As Intermolecular forces increase, ____ also increases

A

boiling point, surface tension, viscosity, volatility

28
Q

1st law of Thermodynamics

A

total energy of the universe is always constant

29
Q

2nd law of Thermodynamics

A

entropy of universe always increases over time

30
Q
A

BYU (5 decks)

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