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CHM151 > ch7 > Flashcards

ch7 Flashcards

1
Q

system

A

The substance or mixture of substance under study

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2
Q

surroundings

A

Everything in vicinity of thermodynamic system

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3
Q

Is a thermometer a system or surrounding?

A

surrounding

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4
Q

Is a beaker a system or surrounding?

A

surrounding

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5
Q

What is the variable for Heat?

A

q

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6
Q

Kinetic energy

A

Energy due to motion

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7
Q

Potential energy

A

Energy due to weight/location

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8
Q

Thermal energy

A

Energy that is transferred in the form of heat

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9
Q

thermal equilibrium

A

When there is no longer thermal energy tranfer

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10
Q

chemical energy

A

Energy based on positions of electrons and nuclei

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11
Q

coulombs Law for calculating chemical energy

A

E el= Q1 x Q2 / d (download before quiz)

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12
Q

what is the transfer of thermal energy called?

A

heat

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13
Q

closed systems only echange

A

heat not mass

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14
Q

isolated systems don’t exchange

A

heat nor mass

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15
Q

Kinetic energy formula

A

1/2mv aka (1/2 (kg)(meter/sec))

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16
Q

Change in Energy is calculated by

A

difference between final energy and initial energy E(final)-E initial or E(products)- E (reactants)

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17
Q

When energy of products is higher than energy of reactants?

A

Positive change (change gains energy from surroundings)

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18
Q

When energy of reactants is higher than energy of products?

A

negative change (change loses energy to surroundings)

19
Q

delta E is always talking about

A

the system

20
Q

positive q means _____ and negative q means

A

system gains heat, negative means system loses heat

21
Q

positive w means work is being done _____ the system while negative w means work is being done ____ the system

A

+ = done on the system, - = done by the system

22
Q

When waves interact so they add to make a larger wave it is called ______ and happens in _______ interference

A

When waves interact so they add to make a larger wave it is called in phase and happens in constructive interference

23
Q

When waves interact so they cancel each other it is called ______ and happens in _______ interference

A

Out of phase and happens in destructive interference

24
Q

Waves widening when interacting with a wall with a hole or such is called

A

Wave diffraction

25
Q

Two slit interference experiences both

A

Destructive and constructive interference

26
Q

Brighter light =

A

Greater amplitude

27
Q

Principle quantum number

A

n

28
Q

Angular moment quantum number

A

l

29
Q

Magnetic quantum number

A

m (sub) l

30
Q

n can be any interger

A

1 or greater

31
Q

Bigger n means the

A

More energy the orbital has

32
Q

As n gets larger the amount of energy between orbitals gets

A

Smaller

33
Q

l / angular moment quantum number determines

A

Shape of orbital

34
Q

l can be any integer from

A

0 to (n-1)

35
Q

l= 0 is a ______ orbital

A

s/spherical

36
Q

l= 1 represents a _______ orbital

A

P / parallel orbital

37
Q

l= 2 represents a ___ orbital

A

d/ 4 way orbital

38
Q

l = 3 represents an ____ orbital

A

f/ fricken octopus (8) orbital

39
Q

m sub l can be

A

+ and - all l values and 0

40
Q

The total number of m sub l numbers is the total amount of

A

Orbitals based on what type given by the l number

41
Q

Possible orbitals for n=1

A

Only 1 s orbital

42
Q

The element with the _______ specific heat capacity will undergo the greatest change in temperature

A

Lowest

43
Q

273.15k is not a standard state for liquid

A

True

44
Q

If change in H or E is positive then the reaction is

A

Endothermic

CHM151 (5 decks)

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