Chapter 6 Electronic Structure of Atoms

Question 1

Wavelength

Answer 1

distance from 1 peak to the next

Question 2

Frequency

Answer 2

number of waves that pass given point per unit of time

Question 3

What velocity to all waves travel?

Answer 3

The speed of light (all waves the same)

Question 4

Quanta

Answer 4

Energy packets

Question 5

What did Einstein discover about light?

Answer 5

It has quantized energy

Question 6

Describe Bohr’s Model (3)

Answer 6

1) Electrons orbit nucleus-each layer diff. energy level 2)Electrons in orbit are stable 3)Energy is emitted when electron travels to another

Question 7

Louis de Broglie

Answer 7

matter has wavelike properties-in subatomic particles, electrons

Question 8

Heisenberg

Answer 8

electron location is unknown due to momentum (uncertainty)

Question 9

Erwin Schrodringer

Answer 9

Higher density is how we sense location of electron

Question 10

Calormetry

Answer 10

measure heat changes in reaction (calorimeter)

Question 11

Heat Capacity

Answer 11

amt of heat required to raise temp of substance by 1K (1 degree celsius)

Question 12

Specific Heat

Answer 12

Increase temp of 1 gram of substance by 1K

Question 13

Molar Heat Capacity

Answer 13

increase temp of 1 mol of substance by 1K

Question 14

Constant Pressure Calorimetry

Answer 14

“Coffee Cup” Calorimeter (System-reactants and products, surroundings-water and everything else)

Question 15

If rxn generates heat

Answer 15

exothermic, increase temp (+)

Question 16

If rxn absorbs heat

Answer 16

endothermic, them decrease (-)

Question 17

Bomb Calorimetry

Answer 17

Constant Volume/Combustion RxN’s (system-reactants/products, surroundings-water/ calorimeter) MEASURE INCREASE IN TEMP